Increase of Illegal Immigration

"Immigration and Emigration". The New York Times. February 2, 2011.

A huge increase in the illegal immigration had reached to its peak with over 11 million illegal immigrants living in the United States. According to the recent studies, the number of illegal immigrants had decreased by a little in 2010 comparing to 2008, but still this number of illegal immigrants is higher than the number of legal immigrants in the United States.

http://topics.nytimes.com/top/reference/timestopics/subjects/i/immigration-and-emigration/index.html