Rubio has to balance aggressive Trump policies with Latin America's willingness to cooperate. The Panama Canal will be contentious.

Former U.S. senator from Florida Marco Rubio jumps into new role as secretary of state with flurry of phone calls, planned ...

Marco Rubio has changed a lot since he ran for president in 2016. But his political evolution has made him uniquely qualified ...

Secretary of State Marco Rubio began his tenure as the top U.S. diplomat on Tuesday by pledging to keep his department at the ...