The secretary of state said the United States could take steps to “protect its rights.” Panama’s leader said he was sure that President Trump wouldn’t seize the canal.

U.S. Secretary of State Marco Rubio has told Panama’s president that the Central American ally must reduce Chinese influence over the Panama Canal area or face potential retaliation from the Trump administration.

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.