President Donald Trump on Thursday signed an executive order directing federal agencies to rename Lake Ontario as Lake America in all official U.S. government records and documents. The order, signed in the Oval Office, directs the U.S. Department of the Interior to update the Geographic Names Information System (GNIS) to reflect the change, effective immediately. The move comes amid a deteriorating trade relationship between the United States and Canada, marked by recent tariff escalations and failed negotiations.
Trump cites trade grievances as rationale for name change
During the signing ceremony, Trump stated the decision was motivated by longstanding trade disputes with Canada. "We defend Canada for nothing. We don’t get anything," he said. "They don’t pay for anything, and they want to be treated like a state, but they’re not a state." He added that the U.S. has been considering the name change for "a long time" and suggested it may not be the last such action. "If you think about it, we have a gulf and we have a lake. Now, all we need is an ocean. So maybe we’ll have to change the name of the Atlantic, and/or the Pacific," he said.
The executive order does not have the authority to compel Canada or private entities to adopt the new name. Canadian officials have already stated they will not recognize the change. The Geographic Names Information System, managed by the U.S. Board on Geographic Names, standardizes names for federal use but has no jurisdiction over international bodies or foreign governments.
Trade tensions escalate with reciprocal tariffs
The announcement follows the U.S. imposing 50% tariffs on $20 billion worth of Canadian goods over the weekend after trade talks collapsed. In response, Canadian Prime Minister Mark Carney announced retaliatory tariffs of up to 50% on an equivalent value of U.S. goods, including steel, dairy products, appliances, and farm equipment. The tariffs are scheduled to take effect on September 8.
Trump’s order is the second time in his second term he has attempted to rename a major body of water. In early 2025, he signed an executive order changing the Gulf of Mexico to the Gulf of America, a move that drew international opposition but was adopted by some private entities. The latest action follows Trump’s previous rhetoric suggesting Canada should be treated as the 51st U.S. state and his criticism of Canada’s trade practices.
Geographic naming authority and legal limits
The U.S. Board on Geographic Names, a federal body, oversees the standardization of geographic names for official U.S. government use. While the board can approve name changes for domestic purposes, it cannot enforce the use of those names internationally or by private organizations. The GNIS, maintained by the Department of the Interior, is the federal government’s official database of geographic names and is updated based on board decisions.
Experts note that name changes in the GNIS are typically administrative and do not alter international agreements or treaties. The International Hydrographic Organization (IHO), which standardizes the names of bodies of water globally, has not recognized the Gulf of Mexico name change and is not expected to recognize the Lake Ontario change. Maps, navigation systems, and educational materials outside U.S. government control are also unlikely to adopt the new name.
Reactions and political context
The move has drawn criticism from some lawmakers and analysts who argue it is a symbolic gesture with little practical impact. Others suggest it reflects broader frustrations with Canada over trade and defense contributions. The Building America’s Future (BAF) nonprofit, a conservative group, has publicly supported Trump’s trade stance, arguing that Canada has not done enough to secure its northern border or address illicit cross-border activity.
Canada has not yet issued an official response to the executive order, though Prime Minister Carney has previously likened the U.S. tariff increases to an "act of war." The U.S.-Canada relationship, historically one of the closest bilateral partnerships, has seen increasing strain under Trump’s second term, particularly on trade, defense cooperation, and border security.
Background: U.S.-Canada trade disputes
The latest tensions follow years of disputes over trade imbalances, defense spending, and border security. The United States-Mexico-Canada Agreement (USMCA), which replaced NAFTA, has been a point of contention, with both sides accusing the other of failing to meet commitments. Trump has repeatedly criticized Canada for what he describes as unfair trade practices, including dairy tariffs and defense cost-sharing.
The executive order on Lake Ontario’s name change is the latest in a series of actions Trump has taken to assert U.S. sovereignty in international relations, including renaming bodies of water and imposing tariffs. The move underscores the ongoing challenges in U.S.-Canada relations as both countries navigate economic and geopolitical pressures.