Secretary of State Marco Rubio embarks this weekend on his first foreign trip in office. He's heading to Central America to press President Donald Trump’s top priority — curbing illegal immigration — and bring the message that the U.

President José Mulino said Panama's sovereignty over the world's second busiest waterway is not up for discussion.

The US secretary of state told the Panamanian president that it must reduce China’s control over the canal or face retaliation from the White House.