WASHINGTON (Reuters) - U.S. President Donald Trump said on Thursday he has a lot of confidence in his acting chief of staff, Mick Mulvaney, after Mulvaney told reporters that Ukraine’s investigation into the 2016 election was one of the reasons Washington had delayed aid to Kiev, before denying the White House had done that.

Reporting by Steve Holland; Writing by Makini Brice; Editing by Chris Reese Our Standards: The Thomson Reuters Trust Principles.