NYT – A significant drop in the number of children apprehended at the United States-Mexico border in recent months sprang from Mexico’s record number of deportations of minors traveling without a guardian, according to an analysis released Tuesday.

http://www.nytimes.com/2015/04/29/world/americas/fewer-children-are-entering-us-illegally-as-mexico-cracks-down.html?_r=0