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.

China's expanding footprint in Latin America is expected to be high on the agenda when US Secretary of State Marco Rubio visits Panama next week on his first overseas trip since taking office, according to observers.