The Biden Justice Department is facing accusations from Republicans of enabling noncitizens to vote in the 2024 election after it sued Alabama last week over the state’s recent plans for a voter roll purge.

A lawsuit was filed against Alabama Secretary of State Wes Allen, a Republican, on Friday alleging he attempted to remove 3,251 people registered to vote from the state’s rolls. Allen said on Monday it was his “constitutional duty to ensure that only American citizens vote in our elections” but did not elaborate further, citing the lawsuit filed in the U.S. District Court for the Northern District of Alabama.