Republican lawmakers are pursuing the unusual mid-decade redistricting plan amid pressure from President Donald Trump to protect the GOP’s slim majority in the U.S. House.

Texas state Rep. Gene Wu joined a private strategy call on Thursday with Democratic leaders from other GOP-led states that might also redraw their maps.

Houston Sen. Carol Alvarado plans to filibuster a Republican bill that redraws congressional maps and adds five GOP-leaning districts, part of a Trump-backed strategy to secure House control.

While Gov. Greg Abbott blasted through a Democratic blockade and advanced a new congressional map, California Gov. Gavin Newsom is eying a new map in his state.

The House Democrats who broke quorum to block GOP redistricting and stopped all activity in the chamber for two weeks have each been fined more than $9,000, according to a letter dated Thursday from the chairman of the House Administration Committee.

Other Democratic lawmakers have joined a colleague in staying at the Texas Capitol rather than accept around-the-clock police escorts meant to prevent them from blocking a vote on a Republican plan for redrawing congressional districts.

California Gov. Gavin Newsom used his Democratic supermajority to push a new congressional map that favors Democrats in an effort to nullify the expected new map from Texas.