The Government Accountability Office said Friday the top two officials at the Department of Homeland Security are not legally allowed to serve in their roles within the agency. According to the watchdog, Chad Wolf, acting secretary of DHS, and Ken Cuccinelli, acting deputy secretary, were not installed according to the proper order of succession. Democrats have called on them to resign.

Last week, the ACLU called for dismantling DHS by breaking it up into smaller federal agencies. Immigration activists say the agency should be fully abolished.