Departure of Jeb Bush from presidential race frees his supporters to back Marco Rubio, but Trump's momentum will be hard to stop Rubio Some of the most politically active association leaders are now endorsing and fundraising for Marco Rubio, even as Donald Trump continues to solidify his lead in the race to be the Republican candidate for president. Once Bush announced Feb. 20 that he was ending his campaign, GOP establishment figures began coalescing around Rubio, including some association CEOs. Former Minnesota Gov. Tim Pawlenty, CEO of Financial Services Roundtable, endorsed Rubio on CNN Feb. 22, saying, "he's conservative and he's electable and can unite the party… Read More