The renewed emphasis on enforcement is working, immigration analysts say, but only as a short-term measure. ... Every single one of those policies does push the numbers down for a few months, and then they start to recover and come right back, says Isacson.
He says people will continue to attempt to come to the U.S. if the conditions pushing them to leave home - violence, war, poverty- are more horrific than the ones they may have to face on the journey.
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