Senate Judiciary Committee Chairman Charles E. Grassley brushed aside demands to hold a hearing on the ouster of former Attorney General Jeff Sessions and the designation of Matthew Whitaker as his acting replacement, saying Thursday that the law appears to have been followed. Mr. Grassley also said it was “ironic” that Democrats are now intent on defending Mr. Sessions, who they excoriated for the nearly two years he was in office. The Iowa Republican said he’s confident President Trump followed the Vacancies Reform Act in naming Mr. Whitaker, who was not in a Senate-confirmed position but who, according to the...