On August 27, 2026, Trump signed an executive order renaming Lake Ontario as “Lake America,” five days into a trade war with Canada. Flanked in the Oval Office by large maps of the Great Lakes, one captioned “Making the Great Lakes Even Greater” with a “Lake America” label pasted over Lake Ontario, he said the change was effective immediately.
The order does more than add a name. It directs Interior Secretary Doug Burgum and the Board on Geographic Names, within 30 days, to update the Geographic Names Information System and to “remove all references to Lake Ontario from the GNIS, consistent with applicable law.” It further instructs the Board to ensure that every federal map, contract, document, and communication reflects the new name. Trump later posted a letter from the director of the U.S. Geological Survey saying the change had been made and would “begin occurring in printed documents over the next several days.”
The stated justification is economic and military. The order asserts that the United States is “the greatest protector of the Great Lakes,” that the Coast Guard supplies 9 of the 11 icebreaking vessels on the lakes, and that the United States has invested nearly $4 billion in the freshwater ecosystem over the last decade while Canada “has invested far less.” It claims that because the deepest parts of the lake lie in U.S. territory, “the United States claims most of the Lake's volume.” The same order describes the lake as bounded by New York on the south and east and by the Canadian province of Ontario on the north, west, and southwest.
The timing is the context. Trade talks collapsed on August 22; 50 percent tariffs on Canadian goods took effect; Canada announced matching retaliation for September 8. Trump first floated the renaming on Truth Social days earlier, writing that the United States did not expect “to be doing much business with Ontario any longer” (see Trump Slaps 50 Percent Tariffs on Most Canadian Goods Over Alcohol, Dairy, and Auto Disputes and Trump Revives His '51st State' Taunt at Canada After It Slips Into a Technical Recession).
A president has broad authority over how the federal government labels geography, and this order is lawful on its own terms. What it cannot do is bind anyone else. Canadian Prime Minister Mark Carney answered that the name comes from the Wendat word Ontari'io, is more than 400 years old, and predates both the Confederation of Canada and the Declaration of Independence. New York Governor Kathy Hochul, whose state holds the only American shoreline, said New York would not use the new name either.
The precedent is the part with a documented cost. After Trump renamed the Gulf of Mexico the “Gulf of America” in 2025, the Associated Press declined to adopt the new name in its style guidance, and the White House restricted AP reporters' access to the Oval Office and Air Force One. A federal judge ruled those retaliatory restrictions unconstitutional.
The sharpest objection came from the people whose language the name comes from. The Wendat Nation condemned the order as an attempt to “eradicate” its history. Grand Chief Pierre Picard, the Nation's official spokesperson, wrote: “Outraged, appalled, shocked: there are no other words to describe how I feel following President Trump's decision to rename Lake Ontario 'Lake America.' For our Nation, the name Ontario embodies history, culture, and identity. To call this name into question is an abhorrent and unspeakable act.” Picard said the U.S. Consul General in Quebec City confirmed he would meet with U.S. Ambassador to Canada Pete Hoekstra in the coming days.
Canadian officials at every level declined the new name. Ontario Premier Doug Ford: “It's Lake Ontario to Canadians and the rest of the world. Now and forever.” Toronto Mayor Olivia Chow, who represents the largest city on the lake, said, “Donald Trump's antics won't weaken our resolve as Canadians,” having called the idea “not very neighbourly” earlier in the week. Ontario NDP Leader Marit Stiles said the same. In the Oval Office, Trump said of Canada: “They want to be treated like a state, but they are not a state.”
On August 31, the Seneca Nation raised the objection with the most direct legal grounding. Nation President J. Conrad Seneca called for the order to be rescinded, arguing it violates the 1794 Treaty of Canandaigua, signed by President George Washington with the Haudenosaunee confederacy and promising perpetual peace and friendship. He pointed to Article VI of the Constitution, which makes treaties “the supreme Law of the Land,” and said they “need to always be honored as such.” Of the renaming itself: “The action that President Trump is taking is starkly un-presidential and demeaning to his office and his standing as the leader of the free world. His blatant disrespect toward the Seneca people, other Haudenosaunee nations, and all Indigenous people is unacceptable.” In the Seneca language, the lake is sga:nyodai:yoh, “beautiful lake.”
At an October 10 rally in Clarksville, Tennessee, Trump returned to the idea: “So I was thinking of either the Atlantic or the Pacific. We call it Trump Ocean or, or Ocean of the America or something like that,” and laughed, according to the Roll Call Factbase transcript. No order has followed.
Update (October 22, 2026): at a rally in Pendleton, South Carolina, on October 21, Trump described asking Google to rename the Atlantic Ocean. “I called Google Maps, who are really great with the lake,” he said, and recounted the exchange: “Sundar, I'm thinking of the Atlantic Ocean, can you handle it? No, no, no, this time I'm not doing it, he said,” adding that he was told “oceans are different, sir,” and, “I'll probably pass,” according to the Roll Call Factbase transcript. He did not say the words “Trump Ocean,” as some headlines reported; the account is his own, and Google has not commented.