United States President Donald Trump signed an executive order renaming the shared Lake Ontario to Lake America, according to reports from state media and 24.hu. The directive takes effect immediately and instructs the Department of the Interior, led by Secretary Doug Burgum, alongside federal geographic databases, to update official maps and records to reflect the new designation.
Official Rationale and Geographic Justification
According to statements released by the U.S. government, the renaming aims to emphasize American sovereignty over the body of water. Officials stated that the majority of the lake’s water volume and its deepest points lie within the borders of the United States. Lake Ontario forms one of the five Great Lakes of North America, sitting along the international border between the Canadian province of Ontario and U.S. New York State.
Social Media Announcement and Visual Demonstration
President Trump announced the decision on his Truth Social platform by posting a short video. In the footage, according to 24.hu and primary news reports, he crossed out the label “Lake Ontario” on a map with a black marker and wrote “Lake America” above it. Trump remarked in the video that the change simply required “a good pen and a bit of intelligence,” closing with the message, “Enjoy Lake America!”
Did you know? Lake Ontario is one of the five Great Lakes of North America.
Geopolitical Context and Trade Tensions
Trade negotiations between the United States and Canada broke down the week prior to the announcement, with both governments publicly blaming each other for the failure of three days of intensive talks, as detailed in reports from HVG. Mark Carney, the Canadian Prime Minister, has not yet issued a public response to inquiries regarding the lake’s unilateral renaming.

Frequently Asked Questions
When did the renaming of Lake Ontario take place?
President Trump signed the executive order on Thursday, implementing the name change with immediate effect.
Who is responsible for updating the official maps?
According to the White House, the Department of the Interior and Secretary Doug Burgum are tasked with updating official U.S. geographic databases and federal mapping systems.
What was Canada’s official response to the name change?
Canadian Prime Minister Mark Carney’s office has not yet responded to media inquiries regarding the executive order.
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