President Trump’s secretary of state arrived in Panama City on Saturday with a brazen mandate from his boss and a wary host.

PANAMA CITY — Marco Rubio’s weekend visit to Panama is set to offer clues to a pressing question: whether the next four years ...

The critical waterway has a complex history. Why does Trump want it back? And what does China have to do with it?

Among the countries for which waivers for certain programs have been submitted are Panama, Costa Rica, the Dominican Republic and its neighbor, Haiti. Although Rubio will not be traveling to Haiti, ...