“I think he is going to be a great prime minister,” Trump said at the White House.
“I think he will be far superior,” he added, a possible reference to former premier Theresa May, to whom Trump often offered unsolicited advice on how to handle Brexit negotiations.
The U.S.vadministration says it wants to reach a trade deal with Britain as soon as the country exits the European Union.
“Dealing with the European Union is very difficult.
“They drive a hard bargain,” Trump said during a meeting with Romanian President Klaus Iohannis.
Johnson, seen as a Brexit hardliner, is due to visit Berlin on Wednesday ahead of the G7, but Chancellor Angela Merkel has ruled out reopening talks on leaving the EU.