Vice President Harris will oversee effort to resolve problems at U.S.-Mexico border

President Joe Biden, whose administration is grappling with overcrowding at migrant facilities on the southern border, tasked Vice President Kamala Harris on Wednesday with leading efforts to coordinate with Mexico and the Central American nations of Guatemala, Honduras and El Salvador.

The assignment marks Harris’ first major policy role since she was sworn in in January.

“I can think of nobody who is better qualified to do this” than Harris, the president said at the White House. “When she speaks, she speaks for me, doesn’t have to check with me.”...