A top Washington lobbyist who previously called Donald Trump “a joke,” now plans to host a series of fundraisers for the Republican presidential front-runner.

Jack Burkman of J.M. Burkman and Associates will host government relations professionals and other lobbyists in the D.C. suburb of Arlington, Va. on June 10 to discuss his plan to raise $200 million over the next six months for the leading GOP candidate to use should he make it to the general election.