In this April 1, 2017, photo, a man in Nogales, Ariz., talks to his daughter and her mother who are standing on the other side of the border fence in Nogales, Mexico. Homeland Security Secretary John Kelly says arrests of people entering the United States illegally across the Mexican border plummeted in March 2017. That's a signal that fewer people are trying to sneak into the U.S. (AP Photo/Rodrigo Abd)
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