Republicans on the House Homeland Security Committee pushed forward two articles of impeachment against Homeland Security Secretary Alejandro Mayorkas early Wednesday morning, setting up a full House vote on the matter.

The GOP has called for Mayorkas’s impeachment for months, alleging he has neglected his duty to secure the southern border, but impeaching the head of the Department of Homeland Security is a contested endeavor amid the border crisis. Most House Republicans have been vocally in support of the move, but others have expressed doubts about impeaching Mayorkas.