President Trump must face a defamation lawsuit by a former contestant on his reality TV show “The Apprentice” after a Manhattan judge ruled in a first-of-its kind decision that he could not claim immunity through his job as the nation’s commander-in-chief. “No one is above the law,” Justice Jennifer Schecter wrote in the 19-page decision released Tuesday. Trump had argued that presidents are shielded from civil litigation in state courts under the US Constitution’s supremacy clause, but that assertion had never been fully tested by the courts — until now. “It is settled that the President of the United States...