With four hats, including national security adviser, the former Trump rival is defying predictions he’d be a weak player.

After a controversial deal with El Salvador, the United States is negotiating more arrangements to send migrants to third ...

Marco Rubio's expanding resume underscores President Donald Trump's increasing trust in the former Florida senator, officials ...

World: Rubio, a former Florida senator, currently serves as secretary of State, interim national security adviser, acting ...