There has been a tenfold increase in the number of unaccompanied children trying to enter the United States illegally since 2009. Why has there been this sudden spike?

Since October 2013, more than 52,000 unaccompanied children have been detained by U.S. border-patrol agents. The majority of these children are from three Central American countries: El Salvador, Guatemala and Honduras. The mass exodus of children from Central America to the United States is the unintended consequence of four separate United States policies, each adopted with good intentions: