President Trump told Senators Mitch McConnell, Richard Burr and others that he wanted an inquiry into Russian interference in the election to come to a close. Trump told Senator Mitch McConnell of Kentucky, the Republican leader, and Senator Roy Blunt, Republican of Missouri and a member of the intelligence committee, to end the investigation swiftly. Robert Mueller, the Justice Department’s special counsel who is leading a separate investigation into Russian meddling in the 2016 election, is also examining whether Trump tried to obstruct justice when he fired James Comey, the F.B.I. director who was running a federal inquiry into the matter.