The Department of Justice has entered a legal dispute over California’s controversial redistricting effort, arguing that the state used race as a determining factor in redrawing congressional boundaries to favor Democratic candidates.

Federal lawyers from the DOJ Civil Rights Division filed a complaint Thursday joining an existing lawsuit against Governor Gavin Newsom and the state legislature. The complaint alleges that California officials employed race as a proxy to justify creating districts advantageous to Democratic representation, positioning the move as a direct response to Republican-friendly redistricting in Texas.

According to court documents, DOJ attorneys stated that while California legislators publicly framed their redistricting plan as a partisan response to Republican actions, internal discussions revealed a different focus. “In the press, California’s legislators and governor sold a plan to promote the interests of Democrats in the upcoming midterm elections,” the lawyers wrote. “But amongst themselves and on the debate floor, the focus was not partisanship, but race.”

The federal government contends that the Constitution does not permit such racial gerrymandering. The complaint cites numerous statements from lawmakers and redistricting advocates emphasizing their priority to establish a Latino-majority district as a counterweight to Texas redistricting efforts they characterized as suppressing Latino voter representation.

The controversy stems from Proposition 50, which California voters approved on Election Day. The measure authorizes the state legislature to redraw congressional districts, with projections suggesting the new maps could convert five Republican-held seats to Democratic control.

Governor Newsom celebrated the proposition’s passage as California’s response to what he termed attempts to manipulate upcoming elections. Following the vote, Newsom declared the effort represented an unprecedented organizing achievement completed within ninety days.

The federal intervention came after California Assembly Member David Tangipa, a Republican, filed the original lawsuit challenging the redistricting process. The Justice Department now stands alongside that challenge, exercising its authority to enforce the Voting Rights Act, which contains provisions preventing voter disenfranchisement based on race.

The timing of this legal action carries particular significance as the Supreme Court currently reviews similar questions about the Voting Rights Act’s application in a separate case involving Louisiana’s congressional map. That review addresses long-standing controversies surrounding the law’s interpretation and implementation.

A spokesperson for Governor Newsom dismissed the legal challenge, though the case raises substantial questions about the permissible boundaries between partisan political maneuvering and race-based redistricting under federal law.

The outcome of this litigation could establish important precedents for how states navigate the complex intersection of partisan politics and racial considerations in the redistricting process, with implications extending well beyond California’s borders.

As this matter proceeds through the federal courts, it will test fundamental questions about democratic representation and the constitutional limits on how states may draw the electoral maps that shape congressional power for the next decade.

Related: Fetterman Rebukes Sanders Over Government Shutdown Vote