President Donald Trump said Monday that the Justice Department will "soon" file two separate lawsuits—one challenging California’s newly enacted redistricting plan and another contesting the Senate’s century-old "blue slip" custom that lets home-state senators block federal nominees. Trump called California’s map, signed last week by Democratic Governor Gavin Newsom, an illegal gerrymander designed to boost Democrats’ U.S. House representation. Speaking in the Oval Office, he predicted the federal suit would succeed; Newsom promptly replied on social media, "Bring it." The California measure sets up a November special election to ratify the lines and was pitched by Democrats as a response to a mid-decade GOP redistricting in Texas expected to add five Republican seats. Separately, Trump said the administration will sue to overturn the "blue slip" practice after Senate Judiciary Chair Chuck Grassley refused to discard it. The president argued the tradition is unconstitutional and has stalled several nominees, pointing to acting New Jersey U.S. Attorney Alina Habba, whose confirmation has been blocked. Grassley countered that Habba’s nomination paperwork was never completed and noted that blue slips previously allowed Republicans to derail Biden-era picks. It is unclear how a court would assess either challenge. Federal precedent gives lawmakers wide immunity for internal procedures, and redistricting disputes typically start in state or lower federal courts. The Justice Department has not yet filed either case.