Authors:

An estimated 7 million illegal immigrants were residing in the United States in January 2000. This is double the size of the illegal immigrant population in January 1990 and constitutes 2.5 percent of the total U.S. population of just over 281 million

An estimated 7 million illegal immigrants were residing in the United States in January 2000. This is double the size of the illegal immigrant population in January 1990 and constitutes 2.5 percent of the total U.S.