On April 9, 2025, Panama and the U.S. signed a memorandum letting American troops train and build at Panamanian installations along the canal. Panama's constitution requires canal-defense agreements to pass the National Assembly and a referendum. The episode weighs the government's argument that a memorandum is not a treaty against a citizens' challenge that the Supreme Court has not answered.
The memorandum's verbatim text is not currently obtainable, and the status of the court challenges is unknown. Whether the arrangement counts as a treaty needing a referendum is contested. No poll asking Panamanians directly about the military presence has been located, and total U.S. personnel in Panama has never been published.



