David Beasley, the American chief of the U.N.'s food agency, points to food insecurity in parts of Latin America as a key factor in surging immigration numbers at the southern U.S. border.
"And it was like tickling a ghost. There was no reaction at all." Six months after his organization won the Nobel Peace Prize, Beasley – a former Republican governor of South Carolina – is just back from his latest visit to Yemen. With the country in chaos following six years of war, he describes seeing children wasting away from malnutrition.