Texas House Democrats who fled their state to stall a Republican redistricting effort returned on Monday, ending their 15-day holdout. While Democrats have vowed to keep fighting, their return allows the House to establish a two-thirds quorum necessary to advance new congressional maps in a push backed by President Donald Trump.

The proposed congressional districts are fueling a redistricting battle at the Texas Capitol and could have national consequences. A bipartisan war is already brewing across the U.S.

Republicans can move ahead with redrawing Texas’ congressional districts now that Democratic lawmakers have returned to the state.