President Donald Trump signed an executive order on Thursday to officially rename Lake Ontario as "Lake America" for U.S. government purposes. The action follows a trade dispute with Canada and a Truth Social post earlier in the week where the president shared a map with the name "Lake Ontario" crossed out. While the order requires federal agencies to use the new name, it does not compel other nations or international organizations to recognize the change.
The renaming occurred amid an ongoing trade conflict between the two nations. On Saturday, 50% U.S. tariffs on certain Canadian imports, including wine and dairy, went into effect. The president also announced 50% tariffs on all Canadian steel and automotive imports starting in January. In response, Canadian Prime Minister Mark Carney announced that Canada will begin imposing matching tariffs of up to 50% on billions of dollars of U.S. goods starting September 8.
During the signing ceremony in the Oval Office, President Trump stated that the U.S. defends Canada "for nothing" and claimed the country has "been ripping us off for a long time on trade." The order directs Interior Secretary Doug Burgum to update the Geographic Names Information System (GNIS), which standardizes names for federal use. The U.S. Geological Survey later confirmed that the change would begin appearing in printed federal documents over the next several days.
For the public, the most immediate concrete change involves the ongoing trade war, where consumers may notice the impact of 50% tariffs on Canadian wine, dairy, steel, and automotive parts. Prime Minister Carney noted that the Canadian retaliation starting September 8 will affect billions of dollars in U.S. goods, which typically results in higher prices for businesses and households in both countries. In the U.S., these economic tensions occur alongside a national average gas price above $4 per gallon and a pause on beef tariffs by the administration to manage grocery costs.
The renaming sets a precedent for federal hydronyms and geographic markers. President Trump noted he may seek to rename the Atlantic or Pacific oceans in the future. Canadian officials indicated they do not recognize the change, citing the name's 400-year-old origins in the Wendat word "Ontari’io." Historically, when the administration sought to rename the Gulf of Mexico to the "Gulf of America," some private entities adopted the name, while others, like The Associated Press, did not. What happens next depends on the January implementation of steel and auto tariffs and the outcome of the U.S. midterm elections in nine and a half weeks.