White House and Justice Department officials were angered Thursday after a combative news briefing by acting White House chief of staff Mick Mulvaney in which he insisted President Trump did nothing inappropriate, but seemed to confirm that Trump’s dealings with Ukraine amounted to a quid pro quo.House Speaker Nancy Pelosi (D-Calif.) refused to put a timeline on the impeachment process, declining to say whether she agrees with the assessment of Senate Majority Leader Mitch McConnell (R-Ky.) that the House would vote by Thanksgiving, setting up a Senate trial late this year.