The Trump administration has blamed the escalating humanitarian and security crisis at the southern U.S. border for the deaths of several migrant children. The head of the U.S. Department of Homeland Security told a Senate panel Thursday that the number of arrivals has accelerated in recent months, making it hard to process families and unaccompanied children. VOA’S Zlatica Hoke reports the deaths of the children while in U.S. custody have caused a public outrage.