Senate Democrats accused the Trump administration of abandoning the Environmental Protection Agency’s mission to protect human health and the environment at a congressional hearing Wednesday, slamming agency leadership over a proposal to cut its budget in half.

Lee Zeldin’s appearance before the Senate environment committee was the EPA administrator’s last of three budget hearings this week where he argued for sharply reduced funding for the agency, which already has seen its staffing reduced to its lowest level in decades under his leadership. During much of the week, the former Republican congressman from New York took an aggressive approach, responding to Democrats in the House and Senate with his own questions and at times accusing them of being unprepared or failing to care about the EPA’s record.

Zeldin has eliminated major climate change programs, promoted deregulatory efforts he calls the biggest in American history and canceled billions of dollars in Biden-era environmental justice grants to halt…