As Texas Republicans move ahead with redistricting to protect or even expand the GOP’s slim majority in the US House, Democratic-run states, led by California, are pushing forward with their own efforts to draw new maps and add Democratic seats.

Texas House Democrats, who fled the state to block a GOP-led redistricting plan, are now heading to California, where Gov. Gavin Newsom plans to host them. Meanwhile, Texas House Speaker Dustin Burrows has filed a lawsuit in Illinois to enforce arrest warrants against the lawmakers.

The Supreme Court has ruled that judges are powerless to review partisan gerrymandering. But courts can still enforce the Voting Rights Act provisions that protect minorities' voting power.