The US Justice Department have officially joined a legal challenge brought forward by California Republicans, aiming to halt the state's newly approved electoral boundaries.
This court case, filed in federal court, targets the map championed by the state's Democratic governor, which was created in reaction against a Republican-led gerrymander in Texas.
"The state's electoral map constitutes a brazen power grab that violates voting rights and mocks the electoral system," declared the US attorney general.
The Democratic party have voiced assurance that the redistricting plan will survive court challenges.
"These opponents lost at the ballot box and they are likely to also lose in court," commented a spokesperson for Governor Newsom.
The legal challenge claims that California's map wrongfully utilized race as a factor to heavily favor Hispanic voters in contravention of the US Constitution.
"It is unconstitutional to use race as a substitute to further partisan goals, but that is exactly what the state legislature did with Proposition 50," argued a senior official from the Civil Rights Division.
The legal battle constitutes the most significant response by the Democratic party in the ongoing redistricting war that started with Texas and has extended to multiple states.
In contrast to elsewhere, where Republican state legislatures have implemented partisan maps, California's plan required public consent, which it received with nearly 65% of the vote.
The Democratic party need to flip just a handful of Republican-held House seats to gain majority of the chamber in next year's midterm election.
The party that holds the majority will influence the final years of the current administration, determining whether a GOP-controlled legislature will persist in implementing its political program or face resistance, investigations and potential additional obstacles.
A tech journalist with over a decade of experience covering AI, cybersecurity, and emerging technologies for major publications.