Net Mexico-USA immigration is roughly zero though. [1] Most people who enter the USA by illegally crossing the border are from other Central & South American c

Net Mexico-USA immigration is roughly zero though. [1] Most people who enter the USA by illegally crossing the border are from other Central & South American countries. [1] http://www.politifact.com/truth-o-meter/statements/2015/nov/14/martin-omalley/martin-omalley-net-migration-mexico-was-0-2014/ http://www.politifact.com/truth-o-meter/statements/2015/nov/...