From Illegal to Legal: Estimating Previous Illegal Experience among New Legal Immigrants to the United States / Forschungsinstitut zur Zukunft der Arbeit / Institute for the Study of Labor, April 2008
PDF - http://ftp.iza.org/dp3441.pdf
IZA Discussion Paper No. 3441
Guillermina Jasso, Douglas S. Massey, Mark R. Rosenzweig, James P. Smith:
"This paper develops a framework for estimating previous illegal experience among annual cohorts of new legal immigrants to the United States – using public-use administrative microdata alone, survey data alone, and the two jointly – and provides estimates for the FY 1996 cohort of new immigrants, based on both administrative and survey data."