President Trump’s August 25 Truth Social post floated renaming Lake Ontario “Lake America” as leverage in the escalating U.S.-Canada trade dispute, echoing his earlier executive order that redesignated the Gulf of Mexico as the Gulf of America for U.S. federal references. Traders assign only a 24 percent chance of completion by year-end because the lake is binational, any formal change would require action by the U.S. Board on Geographic Names plus coordination with Canada, and Ottawa has shown no sign of agreement. Past precedent shows such symbolic gestures rarely advance beyond rhetoric when they involve shared international waters or provincial objections. No legislation, formal proposal, or implementation timeline has surfaced, leaving the outcome dependent on whether the trade conflict produces sustained diplomatic momentum.