Trump claims US could rename Lake Ontario as Lake America amid Canada trade war

Donald Trump has claimed he is considering renaming Lake Ontario as “Lake America” as the trade war with Canada escalates.

Lake Ontario lies on the border between the two countries, with New York state on one side and Toronto, the capital of Canada’s Ontario province, on the other.

“The United States is giving serious consideration to changing the name of Lake Ontario to Lake America in that we don’t expect to doing much business with Ontario any longer,” Trump said on his Truth Social platform.

This is not the first time Trump has attempted a nationalistic renaming of a geographical feature. In January 2025 Trump issued an executive order to refer to the Gulf of Mexico as the “Gulf of America”.

Mexico argued the US cannot legally change the Gulf’s name because the United Nations Convention on the Law of the Sea dictates that an individual country’s sovereign territory only extends up to 12 nautical miles out from the coastline.

Lake Ontario with the skyline of Toronto in the distance.
Lake Ontario with the skyline of Toronto in the distance. Photograph: RM Nunes/Alamy
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Trump blasts Canada as ‘most difficult and unreasonable’ country he deals with

Meanwhile, Donald Trump has continued to blast Canada for “ripping off” the US “for decades”.

“They have been charging our Farmers 400% Tariffs, and more. They have driven many wonderful U.S. companies out of business. For 10 years they wouldn’t certify Gulfstream Jets, until I got involved. They wanted 100% of the market for Gulfstream’s Canadian competitor,” the president wrote on Truth Social. “I deal with many countries, and Canada is easily the most difficult and unreasonable. They feel entitled, but they are not a State, and will be entitled no longer!”

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