Texas has been the epicenter of Trump’s push to gerrymander congressional maps to shore up Republicans’ narrow House majority before next year.

California's governor said on Friday he will ask voters to approve a ballot measure in November redrawing the state's congressional map in a way likely to create five more Democratic seats, escalating a redistricting war with the Republican-led state of Texas and President Donald Trump.

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.