Why the U.S. has so many undocumented immigrants

Until 1996, half of the Mexican immigrants who came to the US without papers would return to Mexico within a year. That was the year the so-called Illegal Immigration Reform and Immigrant Responsibility Act (IIRIRA) turned that unauthorized north-bound immigration into a one-way street. A vox video.

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Tags: IIRIRA, Illegal Immigration Reform and Immigrant Responsibility Act, immigration, Mexican border, Mexican immigration, Mexico, unauthorized immigration, undocumented immigrants