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.

Pritzker has arranged for roughly 30 Democratic lawmakers to stay in Illinois for the week. Politico was first to report the lawmakers had left the state.