KAREN A. WOODROW-LAFIELD, Ph.D., Principal Investigator

 

MODELS OF THE OCCURRENCE AND TIMING OF NATURALIZATION

 

National Institute of Child Health and Human Development, R01 HD 37279

 

Web Page:  http://home.comcast.net/~karenwoodrowlafield

 

 

Karen A. Woodrow-Lafield, Principal Investigator, conducted this project while she was an Associate Professor in Sociology and Research Fellow, Social Science Research Center, at Mississippi State University (1999-2002) and Director, Border and Inter-American Affairs, holding a two-year appointment as Visiting Faculty Fellow, Institute for Latino Studies, at the University of Notre Dame (2002-2004).  For further information and inquiries about continuation of this project, contact her at 202-276-2818 or by email, KarenWLafield@cs.com or WoodrowLafield@cs.com .   

 

 

Selected Abstracts 

 

  • “Pathways to U.S. Citizenship,” Karen A. Woodrow-Lafield, Museums & Social Issues 3(2, Fall): 235-244.  The U.S. foreign-born population includes more noncitizens than naturalized citizens, a reversal of the 1930-1980 trend of high-naturalized citizenship, especially among European-born persons.  As the policy debate continues about border enforcement and an unauthorized presence, naturalization and pathways to U.S. citizenship are more prominent.  This article reviews the steps in making the transition to naturalized citizen and eligibility criteria.  The article also discusses naturalization as a temporal process of civic assimilation.  Museums can play important roles in promoting understanding of immigrant pathways to naturalized citizenship with viewpoints on origin groups, institutions, and communities. 
  • Migration, Immigration, and Naturalization in America,“ Karen A. Woodrow-Lafield, Pp. 60-79 in From Arrival to Incorporation: Migrants to the U.S. in a Global Era, Elliott Barkan, Hasia R. Diner, and Alan Kraut (eds.), New York University Press.  Scholars and others are fascinated with migration and immigration this decade when the U.S. foreign-born population is nearly as large as the Hispanic (or Latino) population or the Black or African American population.  In the past two censuses, the number of noncitizens was greater than the number of naturalized citizens, in contrast with the trend between 1930 and 1980 when the European-born accounted for the majority of the foreign-born before recent immigration from Asia and Latin America.  Naturalization or naturalizing is relatively little noted in the social science literature and governmental policies have been directed more to border enforcement and immigration benefits than to naturalization.  This article focuses on new perspectives for understanding temporal processes of naturalizing and recognizing the influences of social capital and human capital. 
  • “Interstate Migration and the Transition to Citizen,” Karen A. Woodrow-Lafield, Presented at the annual meeting of the Population Association of America, New Orleans, April 19.  For adult immigrants of 1978-1991 who became U.S. citizens, the majority was living in the states of initial residence, but about one-fifth had moved to another state.  From logistic regression analyses, the likelihood of making an interstate migration varies by visa class of admission, manner of entry, initial residence, and place of origin.  Men with employment-sponsored visas were more likely to have experienced an interstate migration, and this may have resulted from greater human capital allowing choice in economic opportunities and amenities, including availability of ethnics as peers.  Immigrants initially settling in Florida or California seemed less likely to have left these states.  Further investigation is needed to explore the feasibility of this approach for supplementing existing sources on internal migration.
  • “New Citizens and Internal Migration,” Karen A. Woodrow-Lafield.  Presented at the 2006 annual meeting of the Population Association of America, Los Angeles, March 29-April 1.  This analysis explores internal migration in the period between admission as lawful permanent resident and naturalization.  Internal migration of foreign-born residents is more important to consider because the foreign-born population is more dispersed to communities not traditionally receiving immigrants.  For adult immigrants of 1978-1991 who became U.S. citizens, the majority was living in the states of initial residence, but 22 percent had moved to another state.  From logistic regression analyses, the likelihood of making this type of interstate migration varies by visa class of admission, manner of entry, initial residence, and place of origin. Men are more likely to have made this move than women, and this approach may be more revealing for their experiences.  Further investigation is needed to explore the feasibility of this approach for supplementing existing sources on internal migration.
  • “Family Reunification and Citizenship for Recent Chinese Immigrants, New York City,” Karen A. Woodrow-Lafield and Bunnak Poch.  Presented at the 2006 annual meeting of the Population Association of America, Los Angeles, March 29-April 1.  This study examines the timing of naturalization for Chinese immigrants settling in New York City.  Immigration helped sustain New York City population levels in the 1990s.  Chinese immigrants naturalize more quickly than other major groups, and they sponsor many family members under immediate relative provisions.  Based on continuous-time hazard models over duration controlling for unobserved heterogeneity, immediate relatives of U.S. citizens and employment immigrants were naturalizing more quickly than immigrants under family preference categories since the mid 1980s.  For most cohorts, immigrants reporting professional, managerial, technical sales, or administrative occupations showed propensity to naturalize more quickly than others.  The gender effect was inconsistent, although women of recent cohorts were naturalizing more quickly, perhaps due to changing gender roles. 
  • “Naturalization of U.S. Immigrants Before Reforms in the 1990s,” Karen A. Woodrow-Lafield, Xiaohe Xu, Thomas Kersen, and Bunnak Poch.  Presented at the 2005 annual meeting of the Population Association of America, Philadelphia, March 30-April 2.  The influences of gender, origin, and admission criteria are examined in the timing of naturalization for all lawfully admitted adult immigrants of 1978-1991.  Individuals entering as spouses may especially seek to naturalize to give visa opportunities to their family members living abroad.  Prior research suggests origin differences in completed naturalization levels for foreign-born persons in the census, controlling for duration of residence.  Cox regression models are discussed, including sex-specific models with dummy variables for region of origin.  Asian origin immigrants show the greatest naturalization propensity and Latin American immigrants show the least naturalization propensity.  Immigrants were more likely to naturalize if they were admitted in categories suggesting lower social capital or higher human capital, such as employment-sponsored categories, spouses of aliens, and spouses of citizens. 
  • “Pathways to U.S. Citizenship for Child Immigrants” Karen A. Woodrow-Lafield, Presented at the annual meeting of the Population Association of America, Philadelphia, March 30-April 2, 2005.  This study investigates independent naturalization of child immigrants. For child immigrants adopted, parental nativity status conveys citizenship. For child immigrants accompanying or joining parent immigrants, parental naturalizing conveys citizenship to minors. Naturalizing parents need to request citizenship certificates, or an adult son or daughter may later request a U.S. passport through the State Department based on derivative status. This study focuses on naturalizing as adults by child immigrants whose parents had not naturalized during their childhood. Younger immigrants would be more likely to derive citizenship and less likely to naturalize as adults. Older immigrants would be more likely to naturalize as independent adults, because their parents had not naturalized while they were minors. This approach adds understanding of naturalization outcomes for recent child immigrants reaching adulthood, and future research should incorporate statistical controls to compensate for the unobserved outcome of derivative citizenship. The Child Citizenship Act of 2000, effective February 27, 2001, is likely to simplify the transition to citizenship for child immigrants.
  • “Child Immigrants as Citizens,” Karen A. Woodrow-Lafield (2004), Presented in topic contributed session on record linkage, Organized by Professor Michael Larsen, Iowa State University, Joint Statistical Meetings, American Statistical Association, Toronto, August 8-12, 2004.  2004 Proceedings of the American Statistical Association, Section on Government Statistics [CD-ROM], Alexandria, VA: American Statistical Association: 4603-4608.This study investigates naturalization among child immigrants.  Parents’ actions in naturalizing simultaneously convey U.S. citizenship to minor children, and parents need only request certificates of citizenship.  U.S. born parents may similarly convey citizenship to adopted children.  Adult sons and daughters of naturalized parents may later request a U.S. passport on the basis of derivative citizenship status through the Department of State.  Individuals who were children at immigration could naturalize in adulthood.  Less than one-fifth of foreign-born children are naturalized citizens in census and surveys, and they probably derived that status at parental naturalization.  The older a child at immigration, likelihood of derivative status is lesser simply because older children would be more likely to age out of eligibility as parents met residency requirements to naturalize.  Children aged 0 to 10 years at immigration would be more likely to derive citizenship.  This analysis draws on linked records for immigrants (1978-1991) and naturalizations (1978-1996).  Despite limitations, preliminary analyses illustrate this approach adds to understanding of naturalization outcomes for child immigrants. 

·        “Migration, Immigration, and Naturalizing in America,“ Karen A. Woodrow-Lafield (2003).  Invited presentation, “Transcending Borders: Migration, Ethnicity, and Incorporation in an Age of Globalism,” Joint Conference of the Immigration, Ethnicity, and History Society and New York University, October 31-November 2, 2003, New York City.  Migration and immigration are fascinating to scholars and the public alike as the United States holds a foreign-born population nearly as large as the Hispanic or Latino population or the Black or African American population.  Many foreign-born residents, but not all, are long time residents, and others may be migrants or temporarily living here, at least with by intentions.  The past two censuses marked the greater number of noncitizens than naturalized citizens, contrasting with the 1930-1980 trend of prevailing naturalized citizen status of the foreign-born population.  Naturalization or naturalizing is a transition that has been little noted in social science literature and was in a lesser realm than border enforcement and immigration benefits in the former Immigration and Naturalization Service.  The emphasis here is description of new data as to prospects for more understanding of the process of naturalizing in America.  For immigrants admitted 1978-1991, prior to the Immigration Act of 1990, naturalization outcomes are tracked.  Studies with this data delineate the role of social capital and human capital in the timing of naturalization and specific variations by gender and origin. 

  • “Naturalization Experiences of U.S. Immigrants:  Highlights from Ten Countries,” Karen A. Woodrow-Lafield, Xiaohe Xu, Thomas Kersen, and Bunnak Poch (2004).  Population Research and Policy Review 23 (3, June): 187-218.The saga of U.S. immigrant naturalization is merely sketched for about 25 million immigrants entered in three decades of renewed immigration.  This study documents naturalization outcomes for immigrants from ten major countries of origin, using administrative records on immigrants and naturalizations.  Following the 1978-1987 admission cohorts for the first decade or more of permanent residence, this study finds significant covariate effects on the timing of naturalization by origin, mode of entry, and immigrant visa class, net other influences of demographic and background characteristics.  Immigrants from the Philippines, Vietnam, and China, naturalized more quickly than immigrants from India, Korea, Cuba, Colombia, Jamaica, the Dominican Republic, and Mexico.  Those who adjusted from statuses as nonimmigrants, refugees, or asylees became naturalized citizens more quickly.  Those immigrants with employment-sponsorship naturalized faster than family-sponsored immigrants.  Spouses of citizens, spouses of permanent residents, spouses of siblings of citizens, and spouses of sons and daughters of citizens naturalized faster than some other immigrants.  Gender was not significant in the multivariate analysis but further research will more fully explore sex-specific variation in the timing of naturalization given likely variation in women’s representation by origin and admission categories. 
  • “Home and Flag: the New York Story,” Karen A. Woodrow-Lafield and Bunnak Poch (2003).  2002 Proceedings of the American Statistical Association, Section on Government Statistics [CD-ROM], Alexandria, VA: American Statistical Association: 3783-3792.  American communities with established immigrant communities are popular destinations for newly arriving immigrants.  These choices may reflect attractiveness of economic and cultural opportunities or other amenities.  There may also be underlying dynamics as social networks facilitate migration and adjustment, and the family members sponsored through the immigration system by their predecessors opt to live nearby.  This study examines employment and family factors in patterns of naturalizing for a select sample of immigrants and recently naturalized citizens living in New York City focusing first on Dominicans arriving over 1978-1991.  Women had greater propensity to naturalize.  Employment-sponsored immigrants were more likely to do so than either immediate relatives of citizens or immigrants admitted under family-sponsored preference categories.  Recent naturalizations, nearly three-quarters of a million immigrants in New York in the 1990s, are likely to lead to sponsored immigration that helps sustain the population levels for New York City.  
  • “The Process of Naturalizing:  Contrasts for Asian and Latin American Immigrants,” Karen A. Woodrow-Lafield, Xiaohe Xu, Bunnak Poch, and Thomas Kersen (2003).  Presented at the 2003 annual meeting of the Population Association of America, Minneapolis, May 1-3, 2003.  This study investigates gender and admission criteria in naturalizing for U.S. immigrants of 1978, 1985, and 1990 from six countries.  With evaluation of alternative continuous-time hazard models over duration, the underlying hazard function forms are the Gompertz for Cubans, Mexicans, and recent El Salvadorans and the log-logistic for Chinese, Indians, and Filipinos.  Latin Americans began more slowly than Asians but they continued to naturalize in the second decade.  Models controlling for unobserved heterogeneity were preferable for Asians and Cubans.  Employment-sponsored immigrants were most likely to naturalize, and immediate relative spouses also showed high propensities to naturalize.  For Mexicans, early Cubans, and recent Salvadorans, women naturalized sooner than men, but, in contrast, Indian men, Filipino men, and early arriving Chinese men naturalized sooner than women.  These models according to the underlying hazard function form are more definitive for explaining naturalization with changing gender roles and origin contexts over time. Latin American women’s naturalization denotes their roles in settlement and perpetuation of migration. 
  • “A Critique and Research Agenda on the Changing Latino Population, 1990-2010,” Karen A. Woodrow-Lafield (2002).  Presented at Institute for Latino Studies Seminar, University of Notre Dame, August 1, 2002.  The focus is social and demographic change in the U.S. Latino population over 1990-2010.  Incorporation of Latino immigrants is a critical part of the research agenda now and in the future, and naturalization patterns are part of understanding political participation.  This paper presents analyses of immigrant adults admitted over 1978-1987 and naturalization records for immigrants from Latin American countries (Mexico, Cuba, Colombia, the Dominican Republic) to revisit labor force attachment and family reunification hypotheses.  Among findings from origin-specific hazards models for duration to naturalization, greater attachment to the labor force is associated with greater propensity toward naturalizing, and those immigrants likely to have fewer family members in the United States are more likely to naturalize. 
  • “The Immigration-to-Naturalization Project:  Inception, Guidelines, Analyses, and Possibilities,” Karen A. Woodrow-Lafield (2002).  2001 Proceedings of the American Statistical Association, Section on Government Statistics [CD-ROM], Alexandria, VA: American Statistical Association (6 pages).     This presentation describes a new undertaking from inception to current activities, specifically, the record linkage of administrative records for several million immigrants admitted by the U.S. Immigration and Naturalization Service (INS) over fiscal years 1978-1991 with naturalization records over 1978-1996.   In the 1990s, immigrants applied for naturalization in unprecedented numbers and advancement of this research agenda is timely for understanding naturalization in America over two significant decades.  Although a National Academy of Sciences panel was optimistic about such immigrant-naturalization record linkage on a routine basis, only selected immigrant cohorts were previously followed on naturalization.  The project required a secure research site with procedures for protection of confidentiality.  During these cohorts’ progression through the first and second decades of U.S. residence, multiple analyses are ongoing as well as considerations for broader access by the more general research community.  
  • “Naturalization Experiences of U.S. Immigrants,” Karen A. Woodrow-Lafield, Xiaohe Xu, Thomas Kersen, and Bunnak Poch (2001).  Proceedings of the American Statistical Association, Social/Government Statistics Section, Alexandria, VA: American Statistical Association: 106-111.  This paper describes initial analyses of the timing of naturalization for nearly 8 million immigrants entered over 1978-1991.  The major activities to date were setting up the statistical data enclave, data preparation with administrative records, developing record linkage strategies, and creation of the provisional data set.  Results reported here relate to completed naturalization for immigrants admitted over 1978-1987 from ten major sending countries, by demographic characteristics, origin country, and admission criteria.  The highest percentages naturalized are for immigrants from Vietnam (65 percent) and the Philippines (62 percent) and the lowest were for immigrants from Mexico (18 percent) and the Dominican Republic (24 percent).  The percentage naturalized for those admitted under employment-sponsored categories was higher than for family-sponsored immigrants.  Those having nonimmigrant experience had higher naturalization percentages than those without.  In general, women had higher naturalization percentages, but for China, India, and Vietnam, the percentage naturalized for men was higher than for women.  The next steps are to seek insights on causal factors in timing of naturalization, intercohort variation in timing of naturalization, and changes in the pace of naturalization. 
  • “Mexican Migration and U.S. Citizenship in the Early 21st Century,” Karen A.  Woodrow-Lafield (2001).  Invited presentation, Permanent Seminar of International Migration 2001, organized by El Colegio de la Frontera Norte (COLEF), El Colegio de Mexico (COLMEX), and Sociedad Mexicana de Demografia (SOMEDE), Tijuana, Baja California, Mexico, April 20, 2001.  Under the Immigration and Nationality Act, naturalization is a crucial mechanism for sponsorship of family members as immigrants.  The status may also be an indicator of assimilation although this view is opposed by the view that naturalization may reflect self-protective behavior in securing access to public benefits and better health access.  This study reports on completion of naturalization by 1996 for Mexican immigrants of 1978-1987 and the role of characteristics at admission based on hazards modeling for duration to naturalization.  Among findings, greater attachment to the labor force is associated with greater propensity toward naturalizing.  Second, those immigrants likely to have fewer family members in the United States are more likely to naturalize.  Third, differentials by gender suggest the importance of cultural contexts, demographic diversity, and social capital.  Some Western Hemisphere immigrants, including Mexican immigrants, arriving since 1978 may be more likely to have naturalized pursuant to extension of the visa preference system, per-country limitations, and sponsorship benefits to the Western Hemisphere.  This sea change may simply be part of the migration system initiated for U.S. labor provision and satisfying new workers’ needs, a system with thriving social networks and U.S. communities as permanent homes. 
  • “The Hazards of Naturalizing in America: Mexican and Chinese Immigrants,” Karen A. Woodrow-Lafield, Xiaohe Xu, Bunnak Poch, and Thomas Kersen (2001).  Presented at the 2001 annual meeting of the Southern Sociological Society, Atlanta.  These analyses explore influences on duration until naturalization for Mexican and Chinese immigrants admitted in 1978, 1985, and 1990 based on linked administrative records for naturalization.  Event history models are specified with socio-demographic characteristics at admission and visa class of admission, but other likely influences are unobserved.  The major focus is selection of the more appropriate hazard models in continuous-time formulation by allowing the underlying hazard or survival function over duration to follow several forms (exponential, Weibull, Gompertz, log-normal, log-logistic and generalized gamma distribution) and on investigating the value of correction for unobserved heterogeneity.  From estimated Cox and other parametric proportional hazard models and, given absence of time-dependent covariates and multiple states, accelerated failure time models, the results show different hazard function forms by origin, taking the Gompertz shape for Mexicans and the log-logistic shape for Chinese.  Models with correction for unobserved heterogeneity are preferable to those without the correction.  Those immigrants admitted through employment-sponsorship, either as a principal or derivative beneficiary, have greater propensity of naturalization.  Immigrants from China showed high propensity in naturalization regardless of whether admitted through family-sponsorship or employment-sponsorship.  For Mexicans, but not for Chinese, women naturalized more than men. 
  • “Admission Criteria and “Making It” in America as Citizens,” Karen A. Woodrow-Lafield, Xiaohe Xu, Thomas Kersen, and Bunnak Poch (2001).  Presented at the 2001 annual meeting of the Population Association of America, Washington, D.C.  This study of immigrant naturalization draws on new data linking immigrants entered over 1978-1991 to their naturalizations as of 1996.  Recent studies of economic effects of the new immigrants address questions relevant for immigration policy about admissions by visa class.  This research begins to explore experiences of Canadian and European origin immigrants (British, Polish, Irish, Russian, and other) in timing of naturalization focusing on gender and admission criteria.  A striking result is that Irish women admitted as professional or skilled workers or as unmarried daughters of citizens were highly likely to naturalize quickly.  Males were more likely to naturalize if admitted as spouses of professional workers or as unmarried sons of citizens.  These findings are discussed and contrasted with prior results for Latin American and Asian origin immigrants to elaborate the complicated mosaic of contemporary patterns of citizenship and expand the theoretical framework for settlement and citizenship. 
  • “Immigrant Skills and Timing of Naturalization:  Mexico, China, and India,” Karen A. Woodrow-Lafield, Xiaohe Xu, Bunnak Poch, and Thomas Kersen (2001).   Presented at the 2001 annual meeting of the Population Association of America, Washington, D.C. The changing national origin mix of immigrant flows of the past three decades evoked debates about implications of immigrant skills at admission for assimilation.  The purpose of this study is to explore hypotheses as to influence of human capital for propensity to naturalize.  The data are for immigrants, lawful permanent residents, linked with naturalizations as of 1996.  The analyses include male immigrants admitted in 1983-1991 from three leading countries—197,000 from Mexico, 61,000 from China, and 62,000 from India, of whom 13 percent, 41 percent, and 40 percent, respectively, have naturalized.  Prior research has shown those admitted under employment-sponsored criteria are more likely to naturalize.  This research adopts parallel approaches of using reported occupation and using potential occupational earnings values to further elaborate on national origin and progression to citizenship.  Those immigrants for whom occupational backgrounds are indicative of economic assimilation may be more likely to naturalize more quickly than others, irrespective of admission category. 
  • “Gender, Origin, Admission Criteria, and Naturalization Outcomes,”  Karen A. Woodrow-Lafield, Xiaohe Xu, Thomas Kersen, and Bunnak Poch (2000).  Presented at the 2000 annual meeting of the Southern Demographic Association,New Orleans.    Experiences of multiple immigrant cohorts are examined as to gender, origin, and admission criteria in the timing of naturalization.  One incentive for naturalizing is to gain the right of family reunification.  Individuals entering as spouses may especially seek this opportunity as a way of opening the door into the United States for their family members living abroad.  Prior research suggests origin differences in completed naturalization levels for foreign-born persons in the census, controlling for duration of residence.  Cox regression modeling analyses include all lawfully admitted adult immigrants over 1978-1991, with dummy variables for region of origin, and also include region-specific analyses.  Asian origin immigrants show the greatest naturalization propensity and Latin American immigrants show the least naturalization propensity.  Caribbean women showed greater naturalization propensity than men.  Immigrants, especially women, were more likely to naturalize if they were admitted in categories associated with lower social capital, such as employment-sponsored, spouses of aliens, and spouses of citizens. 
  • “Gender and the Family Reunification Hypothesis for Naturalization,” Karen A. Woodrow-Lafield, Xiaohe Xu, Thomas Kersen, and Bunnak Poch (2000).  Presented at the 2000 annual meeting of the Population Association of America, Los Angeles, California. This paper presents initial analyses of immigrant and naturalization records to revisit labor force attachment and family reunification hypotheses for explaining naturalization.  Alternative views of naturalization are as a step conveying rights for sponsoring family members as immigrants, as a measure of incorporation or integration, or as a way of assuring access to public benefits and better health.  Focusing on immigrants of ten major Latin American and Asian origins (Mexico, Cuba, Colombia, the Dominican Republic, Jamaica, China, India, Korea, the Philippines, and Vietnam), the data include about two million adults admitted over 1978-1987.  Pooled and origin-specific hazards models are estimated for duration to naturalization.  Among findings, greater attachment to the labor force is associated with greater propensity toward naturalizing.  Second, those immigrants likely to have fewer family members in the United States are more likely to naturalize.  Third, differentials by gender and origin are found, suggesting roles for cultural contexts, demographic diversity, and social capital.  Finally, Western Hemisphere immigrants seem to have become more likely to naturalize after extension of the preference system and per country limitations. 
  • “Immigration in the Context of Introductory Sociology: An Example Using Immigrants Microdata,” Karen A. Woodrow-Lafield, Xiaohe Xu, Thomas Kersen, and Bunnak Poch (1999).  In Revision.  The “new immigration” has brought greater awareness among social scientists and the public of immigrants’ characteristics, geographic distribution, and interconnections with social institutions.  We investigate incorporation of immigration in introductory college courses in sociology.  First, we examine immigration topics in major textbooks, course descriptions, and syllabi at the introductory level, finding that immigration is not yet established fully.  Second, we illustrate an advantageous strategy for using data for lawfully admitted immigrants to illustrate immigration issues, demographic concepts, and analytic reasoning in introductory-level sociology.  Published tabulations are easily and productively used within introductory sociology.  Based on classroom presentations, these approaches are compatible with a central theme of engaging students with research processes for greater understanding and inquisitiveness. 
  • “Naturalization for Two Cohorts of Mexican Immigrants,” Karen A. Woodrow-Lafield, Xiaohe Xu, Thomas Kersen, and Bunnak Poch (1999).  Presented at the 1999 annual meeting of the Southern Demographic Association, San Antonio.   In Revision.The concepts of gender, social capital, and human capital are examined in relation to the timing of naturalization based on linked administrative records for Mexicans admitted lawfully in 1982 and 1987 and naturalizations as of 1996.  A series of Cox proportional hazard models were calculated for characteristics-at-admission covariates on the timing and occurrence of naturalization.  Key findings are: 1) women are more likely to naturalize than their male counterparts; 2) recent immigrants are more likely to naturalize and to naturalize faster than earlier immigrants; and 3) the propensity to naturalize depends considerably on labor force attachment and gender.  These results complement and enrich understanding of naturalization for the Mexican-born population in the United States.