Ric Grenell, a leading candidate for a top national security post, is a loyalist to former President Donald Trump and has been mentioned as a potential Secretary of State. Grenell is a political pugilist who served as acting Director of National Intelligence and became the first openly gay cabinet secretary. He has continued to be part of Trump's inner circle and has been referred to as Trump's 'envoy.' Grenell has campaigned for Trump in battleground states and has a brash Twitter account where he takes on rivals in the media. He has clashed with liberals but could get through a Republican-controlled Senate.