Trump declared resignation of the economic adviser

The American president Donald Trump said that the chairman of the board of economic consultants at the White House Kevin Hassett resigns. He wrote on the Twitter about it. 
“Kevin Hassett who did such great job for me and administration, will leave
soon” — the American president said. 
Trump promised to tell the name of the new head of the Council after the trip to Europe. 
Also he called Hassett “true friend”.