Does a ‘foreign power’ threaten the Panama Canal? Here’s what you need to know

Secretary of State Marco Rubio embarks soon on his inaugural trip as the United States’ top diplomat. His first stop, Panama could prove to be the most contentious on the itinerary.

​ Secretary of State Marco Rubio embarks soon on his inaugural trip as the United States’ top diplomat. His first stop, Panama could prove to be the most contentious on the itinerary. Read More Breaking News, Latest News and Videos | CNN