Both sides agree that it will be Trump who decides if Rubio is MAGA enough to remain a member of his administration and represent his views around the world. He unceremoniously fired his first secretary of State, Rex Tillerson, via tweet, and has long made clear he views foreign policy as his domain.

Watch as Marco Rubio, Donald Trump's new Secretary of State, delivered remarks to employees at the Department of State upon his arrival after he was sworn into office. The Florida Senator, 53, became the first of the president's cabinet nominees to be sworn into office on Tuesday,

The Senate confirmed Senator Marco Rubio, Republican of Florida, on Monday as America’s 72nd secretary of state, putting a former political rival of President Trump at the helm of American diplomacy.