Spotlight on Immigration Enforcement in the United States / Migration Policy Institute, March 2007
http://digbig.com/4sdxw
Dawn Konet and Jeanne Batalova
"Drawing from the Yearbook of Immigration Statistics, published by the Department of Homeland Security's (DHS) Office of Immigration Statistics (OIS), this Spotlight provides data on apprehensions, detentions, and removals of unauthorised noncitizens in the United States as of 2005."