President Trump proposed renaming Lake Ontario “Lake America,” but the available reporting describes a suggestion under consideration, not a formal renaming or an Oval Office act of crossing out the lake’s name.
President Trump formally renamed Lake Ontario “Lake America” by crossing out its name and writing the new name during an Oval Office appearance.

Trump Threatens to Rename Lake Ontario to Lake America as U.S.-Canada Trade War Heats Up - The New York Times
Source: nytimes.com
Key Evidence
Multiple reports dated August 25-26, 2026, say President Trump threatened, floated, or was considering renaming Lake Ontario, rather than announcing a completed formal renaming.
The New York Times result mentions a graphic with the old name crossed out, but does not establish that Trump personally performed that action during an Oval Office appearance.
No supplied source documents a final decision by the relevant geographic-names authority or an official change to Lake Ontario’s name.
What the Evidence Shows
The reporting published August 25-26, 2026, consistently describes President Donald Trump as threatening, floating, or considering a possible name change for Lake Ontario. ABC News said he was giving the idea “serious consideration,” while NBC News examined whether he could legally make such a change. Those accounts do not establish that a formal renaming occurred.nbcnews.comnbcnews.comCan Trump actually change the name of Lake Ontario?
abcnews.comabcnews.comTrump floats renaming Lake Ontario as 'Lake America' as trade war with Canada...+6 more
The New York Times search result refers to a graphic showing “Lake Ontario” crossed out and “Lake America” displayed in large lettering beside an American flag. That describes the appearance of an image or presentation, not evidence that Trump physically crossed out the name during an Oval Office appearance. The other supplied reports likewise frame the episode as a proposal connected to tensions with Canada, rather than a completed government decision.nytimes.comnytimes.comTrump Threatens to Rename Lake Ontario to Lake America as U.S
cbsnews.comcbsnews.comTrump threatens to change Lake Ontario's name to "Lake America" amid trade fight...+5 more
The claim therefore turns a proposed renaming into a completed formal action and adds an unsupported detail about how it supposedly happened. Later reporting on August 26 said Trump suggested he might not have been joking, but that still indicates an ongoing or rhetorical proposal, not a finalized name change.usatoday.comusatoday.comTrump says 'maybe I wasn't' kidding about renaming Lake Ontario to Lake America