FALFURRIAS, TX - JULY 22: U.S. Customs and Border Protection agents take undocumented immigrants into custody on July 22, 2014 near Falfurrias, Texas. Thousands of immigrants, many of them minors, have crossed illegally into the United States this year, causing a humanitarian crisis on the U.S.-Mexico border. Texas Governor Rick Perry announced that he will send 1,000 National Guard troops to help stem the flow. John Moore/Getty Images/AFP