One stroke of a pen and Lake Ontario is now “Lake America” effective immediately — on US federal maps, that is. Canadian charts and the rest of the world will carry on calling it what it’s been called for over 300 years.
Claim checked: Trump signed an executive order renaming Lake Ontario to ‘Lake America’ on US federal maps; Canada and the world will keep the original name.
President Trump signed the executive order on Aug. 27, 2026. However, the rename takes effect on US federal maps only after a 30-day GNIS update process — not instantly. Canada and international bodies will not adopt the new name.
Sources: cnn.com · abcnews.com · npr.org · globalnews.ca
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