What Happened
President Donald Trump signed an executive order Thursday telling the U.S. Board on Geographic Names to use “Lake America” instead of Lake Ontario for the enormous freshwater lake on the U.S.-Canada border. The order applies to the U.S. government’s geographic naming system. It does not, by executive magic, make Canadian maps, Canadian schoolbooks or the people of Ontario call the lake anything different.
Associated Press reported that the move arrived as Trump’s trade fight with Canada was escalating. That timing is doing a lot of work. Nothing says “let’s resolve a complicated economic relationship” like grabbing a marker and renaming the shared body of water.
America’s Newest Lake, Give or Take 9,900 Square Miles
Lake Ontario has been Lake Ontario for a very long time. It is bordered by Ontario, Canada, and New York, and is one of the Great Lakes. The order changes the preferred name used by a U.S. federal naming service; it does not move the shoreline, alter the water level, or give the United States a second ocean.
The distinction matters because presidential paperwork can change federal usage more easily than it can change shared reality. A U.S. agency can update a database. A Canadian mapmaker can continue using the established name. Millions of people can keep saying “Lake Ontario” because that is what it is called, and because nouns generally do not report to the Oval Office.
The Gulf Already Has a Friend
The order follows Trump’s 2025 effort to rename the Gulf of Mexico as the “Gulf of America” for U.S. government purposes. That earlier rebrand produced the same basic problem: an American administrative name does not automatically become an international name. Google Maps eventually displayed both names in some contexts, a compromise that allowed everyone to argue over a label while the water remained stubbornly wet.
Lake America has a particularly awkward feature: Canada is not merely nearby. Canada owns the other side of the lake, shares the border, and has a province named Ontario. Renaming the lake after the country on one shore is less like updating a street sign and more like putting a new name on a duplex without consulting the other tenant.
The Dumb Part
The dumb part is confusing a federal style guide with ownership of language. The U.S. government can decide what its agencies print. It cannot force Canada to adopt the change, and it cannot erase the historical, geographic and cultural meaning of “Lake Ontario” by executive order.
There is also a practical question: how many public dollars will be spent changing forms, maps, databases and signs so that the government can pretend the lake has a new name while everyone else continues using the old one? The country already has enough paperwork. Now some of it will have to explain which name it is using for the lake formerly known as Lake Ontario.
The Bottom Line
Trump can direct American agencies to use “Lake America.” Canadians can continue calling it Lake Ontario. Both facts can exist at the same time, which is a useful reminder that executive orders are powerful legal instruments but poor substitutes for diplomacy, geography and a conversation with the other country sharing the shoreline.
Sources
AP: Trump signs order renaming Lake Ontario as “Lake America” in the U.S.
The Guardian: Coverage of the Lake America announcement and Canadian reaction