The nomination of the first Muslim American to a federal appeals court judgeship is in deep trouble in the Senate, leaving President Biden with a painful choice between withdrawing the name of Adeel Mangi or trying to overcome the opposition at the risk of losing the chance to fill the crucial post before the November elections. Three Democrats have said they intend to oppose the confirmation of Mr. Mangi to the Philadelphia-based U.S. Court of Appeals for the Third Circuit in response to objections from local law enforcement groups. He has also faced what his backers label an unfounded bigoted...