Senate Republican Conference Chairman John Barrasso (R-WY) endorsed former President Donald Trump late Tuesday, making him the highest-ranking Senate Republican to get behind the former president’s bid to return to Washington. 

Barrasso’s Tuesday evening announcement, which came during a Fox News appearance, makes him the 20th GOP senator to endorse Trump in the Republican primary. As the No. 3 Senate Republican in his capacity as conference chairman, Barrasso is the most senior endorsement Trump has secured in the upper chamber.