Lindsey Graham
US Senator from South Carolina (2003-present); former US Representative (1995-2003)
Republican National Committee
U.S. political committee that leads the Republican Party of the U.S., a/k/a The Grand Ol' Party/GOP
Mitt Romney
U.S. senator from Utah, former Massachusetts governor
Paul Ryan
Former US Representative from Wisconsin
John McCain
US Senator and Representative from Arizona
Trump Make America Great Again Committee
Joint Fundraising Committee for Trump and the RNC
Marco Rubio
US Senator from Florida; (2011-present); 2016 GOP Presidential candidate