The United States Invasion of Panama, code named Operation Just Cause, was an invasion of Panama by the United States between mid-December 1989 and late January 1990. It occurred during the administration of President George H. W. Bush and ten years after the Torrijos–Carter Treaties were ratified to transfer control of the Panama Canal from the U.S. to Panama by 1 January 2000. During the invasion, de facto Panamanian leader, general, and dictator Manuel Noriega was deposed, president-elect Guillermo Endara sworn into office, and the Panamanian Defense Force dissolved.