The attorney general is calling on the “full faith and credit” clause of the U.S. Constitution, which says states should typically honor each other’s judicial proceedings.

Illinois law enforcement officers should be allowed to arrest Texas House Democrats who have been staying in the Chicago area this week, Attorney General Ken Paxton argued in a lawsuit filed Thursday evening.

Texas Attorney General Ken Paxton and House Speaker Dustin Burrows filed suit in a heavily Republican, rural part of the Democratic-led state.