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.

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.

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.