U.S. Secretary of State Marco Rubio on Monday welcomed Panama's decision to let its participation in China's global infrastructure plan expire, calling the move "a great step forward" for its ties with the United States.

U.S. Secretary of State Marco Rubio brought a warning to Panamanian leader José Raúl Mulino on Sunday: Immediately reduce what

US Secretary of State Marco Rubio has demanded that Panama make "immediate changes" to what he calls the "influence and control" of China over the Panama Canal. America's top diplomat said Panama must act or the US would take necessary measures to protect its rights under a treaty between the two countries.