The acting head of U.S. Customs and Border Protection resigned Tuesday amid an uproar over the discovery of migrant children being held in filthy conditions at one of the agency's stations in Texas.
Commissioner John Sanders' departure deepened the sense of crisis and added to the rapid turnover inside the agencies responsible for enforcing President Donald Trump's hardline immigration priorities as the U.S. deals with record numbers of migrant families coming across the border.
In a message to employees, Sanders said he would step down on July 5. He did not give a reason for leaving.
"Although I will leave it to you to determine whether I was successful, I can...