Trump Proposes Renaming Lake Ontario Amid U.S.-Canada Trade Dispute

The proposal, announced via social media, follows a pattern of administration efforts to rename shared geographic features during active trade negotiations, raising questions about the legal...

President Trump stated on August 19, 2026, that his administration is considering renaming Lake Ontario to 'Lake America,' citing reduced expected trade activity with the Canadian province of Ontario. The statement was made in a post on Truth Social, which The Hill reported on that date. Trump wrote directly: '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.'

The proposal arises during an ongoing trade dispute between the United States and Canada. The specific tariffs and trade measures currently in effect between the two countries are governed by executive orders and proclamations issued under the International Emergency Economic Powers Act and Section 232 of the Trade Expansion Act of 1962. The current status of those measures, including any retaliatory tariffs Canada has imposed, would be reflected in the Federal Register and U.S. Trade Representative public filings.

This is not the first time the administration has sought to rename a body of water near a U.S. international border. Earlier in Trump's second term, his administration pursued renaming the Gulf of Mexico to the Gulf of America. The U.S. Board on Geographic Names, an interagency body operating under the U.S. Geological Survey, holds the formal authority to standardize domestic geographic names under federal policy established by law in 1947 (Public Law 80-242). Whether the administration has formally petitioned that board in either case is not confirmed by current public records.

Lake Ontario is one of the five Great Lakes and sits on the international boundary between the United States (New York state) and Canada (the province of Ontario). Any formal federal renaming action affecting a shared international waterway could involve diplomatic considerations governed by the Boundary Waters Treaty of 1909 between the U.S. and Canada, administered in part by the International Joint Commission.

What remains unknown is whether the administration has filed a formal renaming petition with the U.S. Board on Geographic Names, and whether the State Department has been consulted given the lake's status as a shared international boundary water. A Freedom of Information Act request to the U.S. Geological Survey and State Department records on interagency consultation would be the appropriate documents to answer those questions.