The two men have teamed up with Trump to try to cut the size and scope of government. Here's what could stand in their way.

President-elect Donald Trump's pick of Sen. Marco Rubio to become U.S. secretary of state is likely to jolt Latin America ...

And the first foreign leader to meet Trump there in person - since last week’s election result - is due to make a speech. The self-styled libertarian Javier Milei, the president of Argentina, has made ...