A federal judge blocked FBI Director Kash Patel’s attempt to move his bureau’s headquarters down the street to the Ronald Reagan Building, saying he broke laws governing site selection. Judge Theodore Chuang, an Obama appointee, sided with Maryland and Prince George’s County, which had been the leading location for the future HQ site until Mr. Patel decided to keep it inside the District. Judge Chuang said the order restores the plans to build in Greenbelt, just over the Maryland-D.C. line — though he pointed out that Congress has yet to give final approval to that location. He said Congress controls...