Panama has a long history of coups and interventions involving the United States that go back to the establishment of the Panama Canal, some of which resulted in pro-U.S. governments, while other seemed to benefit Communist groups. Documents show that the confessed assassin of Panamanian President José Antonio Remón Cantera was a Central Intelligence Agency asset, and that at least one other CIA asset was on the scene and arrested at the time of the assassination in 1955. Both also share ties to the Cuban community, as well as vague connections to the JFK assassination - and one of them may have also been involved in a plot to kidnap and/or assassinate Vice President Spiro Agnew and CIA Director Richard Helms.