The resignation follows reports of children living in squalor at border stations where they often lack child care, bedding or even basic hygiene items.
Sanders was named acting commissioner after upheaval at the DHS led to the firing of its secretary, Kirstjen Nielsen, in April and then CBP Commissioner McAleenan took over the department in an acting role. CBP is part of the DHS.
Sanders previously served as CBP’s chief operating officer. Before coming to the agency, he was the deputy assistant administrator at the Transportation Security Administration. Sanders, like McAleenan, has been pleading with Congress to pass a $4.5 billion supplemental funding request to expand detention space, blaming the poor conditions for children on a backlog.
Sanders was also under pressure from the White House to crack down on the rising numbers of migrants crossing the border. In May, more than 140,000 undocumented immigrants crossed the U.S.-Mexico border, marking a 13-year monthly high.
Responding to public pressure, CBP moved roughly 300 migrant children out of the poor conditions in a border patrol station in Clint, Texas, to a tent detention camp in the El Paso area Monday. Roughly 30 remained at the Clint facility. CBP then transported a group of about 100 migrant children to the Clint site Tuesdaybecause other facilities were stretched past capacity, according to a Border Patrol official.
It was not clear how many of the new arrivals were previously held at the Clint facility.