LOS ANGELES — The Justice Department on Thursday sued to block new congressional district boundaries approved by California voters last week, joining a court battle that could help determine which party wins control of the U.S. House in 2026.

The complaint filed in California federal court targets the new congressional map pushed by Democratic Gov. Gavin Newsom in response to a similar Republican-led effort in Texas backed by President Donald Trump . It sets the stage for a high-stakes legal and political fight between the Republican administration and the Democratic governor, who's seen as a likely 2028 presidential contender.

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