Panamanian officials offer concessions on Rubio’s first overseas stop, but say they cannot negotiate on control of the waterway.

Secretary of State Marco Rubio is arguing that the presence of two Hong Kong companies and other Chinese firms violates a treaty Panama has with the U.S.

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