**President Donald Trump’s August 25, 2026, Truth Social post floated “serious consideration” of renaming Lake Ontario “Lake America” amid stalled U.S.-Canada trade talks and new tariffs, echoing his earlier Gulf of Mexico executive order.** No formal proclamation, Board on Geographic Names action, or GNIS database update has occurred. Google Maps applies U.S. federal name changes only after official sources are revised and follows longstanding practice of displaying local names for cross-border features such as the Great Lakes, which are jointly managed under the International Joint Commission and 1989 U.S.-Canada geographic naming agreements. The proposal remains at the rhetorical stage, faces procedural and diplomatic hurdles for a shared waterway, and lacks the concrete federal implementation that previously prompted Google’s U.S.-only updates. Traders therefore assign an 80 percent probability that Google Maps will not display “Lake America” for Lake Ontario by the end of 2026.