A woman pushes a stroller across the train tracks in Arriaga August 8, 2014. While the White House says the number of Central American child migrants crossing the U.S. border has fallen sharply, the ... more 
A woman pushes a stroller across the train tracks in Arriaga August 8, 2014. While the White House says the number of Central American child migrants crossing the U.S. border has fallen sharply, the big unanswered question remains why. The U.S. government has pointed to the seasonal weather. However, Reuters reporting in southern Mexico and Central America shows it is due to a combination of factors, including tighter border policing, raids on "La Bestia", or "The Beast" network of cargo trains bound north, horror tales told by deportees who grappled with drug gangs, an advertising blitz touting the dangers of making the journey and the high-profile arrests of several human smugglers, or coyotes. Picture taken August 8, 2014. To match Insight USA-IMMIGRATION/DECLINE REUTERS/Jorge Dan Lopez (MEXICO - Tags: POLITICS TRANSPORT SOCIETY IMMIGRATION) less 
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Reuters | Photo By JORGE DAN LOPEZ / REUTERS
Tue, Aug 12, 2014 1:04 AM EDT