President Donald Trump has apparently decided one newly renamed body of water wasn’t enough.

America already has the Gulf of America. Now, for U.S. federal purposes, it also has Lake America.

Trump signed an executive order on August 27 directing the Department of the Interior and the U.S. Board on Geographic Names to rename Lake Ontario as “Lake America” in federal records and maps. The order directs the Geographic Names Information System to be updated and federal agencies to use the new designation.

And while the name itself is guaranteed to generate jokes, the reason behind the move is considerably more serious.

Why Is Trump Renaming It?

The Lake America move did not happen in a vacuum. It arrives in the middle of a deteriorating trade relationship between the United States and Canada — and Trump has made the connection himself.

Before signing the order, Trump said the United States was giving “serious consideration” to changing the name because the U.S. did not expect to be doing much business with Ontario any longer.

That is classic Trump: take a complicated trade dispute, add an America First message, then turn it into something impossible for anyone to ignore.

Trump has taken a hard America First position on trade, arguing that longtime allies should not receive favorable access to the enormous American market while U.S. companies and products face what his administration considers discriminatory treatment abroad.

Canada has become one of the biggest tests of that philosophy.

The administration has specifically targeted Canadian treatment of American alcoholic beverages, dairy products and motor vehicles. The dispute escalated into steep tariffs and Canadian retaliation, turning what was once mostly the territory of trade lawyers and economists into a full-blown political confrontation.

Trump’s message has remained remarkably consistent: friendship does not mean the United States has to accept a trade relationship the president believes is unfair.

Canada decided to play hardball.

Trump responded by renaming the lake.

Google Maps screenshot showing the Lake America designation.

Source: Google Maps screenshot.

America Says It Is Carrying the Load

Trump’s executive order makes a broader America First case beyond tariffs.

The White House says the United States Coast Guard provides 9 of the 11 icebreaking vessels operating on the Great Lakes, helping keep commercial shipping lanes open. The order also says the United States has invested nearly $4 billion protecting the Great Lakes freshwater ecosystem over the last decade and argues Canada has invested substantially less in comparable efforts.

The administration also points to Lake Ontario’s long importance to American commerce, defense and settlement.

In other words, the argument is not simply: “Lake America sounds better.”

The White House position is that American security, money and infrastructure have played an outsized role in protecting and maintaining the Great Lakes system, and Trump is attaching an unmistakably American name to that contribution.

Whether that is persuasive policy or presidential trolling is now part of the debate.

It may be both.

Map highlighting Lake America.

Source: IRC Media graphic.

First the Gulf. Now the Lake.

This is not Trump’s first geographic rebrand.

Early in his second term, Trump ordered the Gulf of Mexico renamed the Gulf of America for U.S. federal purposes — another move designed around his administration’s broader theme of restoring American pride and emphasizing U.S. interests.

Now comes Lake America.

Map highlighting the Gulf of America.

Source: IRC Media graphic.

That gives the country a Gulf and a Lake.

At this rate, the Atlantic Ocean may want to keep a low profile.

Trump has even joked publicly about needing an ocean next.

Canada Pushes Back

Canada, unsurprisingly, is not impressed.

Canadian officials have rejected the Lake America designation, and they are under no obligation to adopt it. The United States can determine what its own federal government calls the lake, but it cannot dictate Canada’s terminology for a body of water shared by both countries.

Ontario Premier Doug Ford responded with a giant “Lake Ontario. Now and Always” sign.

New York Gov. Kathy Hochul has likewise rejected the change, while Indigenous leaders have objected because the Ontario name has deep Indigenous roots that predate both the modern United States and Canada.

Those are legitimate historical and diplomatic arguments, and the federal order does not erase Canada’s ability — or anyone else’s ability outside federal usage — to keep calling it Lake Ontario.

But Trump’s broader political message is difficult to miss.

He believes Canada has pushed too far on trade, and he appears perfectly willing to use America’s economic weight — and a little political theater — to make the point.

Canada wants to play the game?

Trump clearly believes America holds the better hand.

And if Ottawa keeps pushing, Canadians may want to keep an especially close eye on the western provinces.

At this rate, Alberta could wake up one morning as America’s 51st state.

Relax, Canada. That’s satire.

Mostly.

Suddenly Everyone Cares About Historic Names

There is another layer to the outrage that makes the Lake America fight especially entertaining.

For roughly the last decade, Americans have watched governments, universities, school districts and institutions rename military bases, schools, streets and geographic features because existing names were considered offensive or inconsistent with modern values.

The Biden administration completed the replacement of names for nearly 650 geographic features containing a term the federal government considered derogatory toward Native American women.

Nine major Army installations were renamed in 2023 as part of the congressionally mandated effort to remove Confederate references from military property.

Across the country, schools and public institutions have undergone their own renaming campaigns.

Supporters of those changes argued that names matter — that what America chooses to call its institutions and landmarks reflects its values.

Fair enough.

But that history makes some of today’s outrage over Trump changing geographic names difficult to ignore.

For years, the argument was that longstanding names should not automatically be protected simply because they were longstanding.

Now Trump has the pen.

Suddenly, historical continuity is fashionable again.

There are perfectly reasonable arguments against Lake America, including the lake’s Indigenous history, Canada’s sovereignty over its own naming conventions and the question of whether presidential naming authority should be used as a weapon in a trade dispute.

But “you can’t just change historic names” is a considerably harder argument to make after a decade spent doing exactly that.

Perhaps America did not actually disagree over whether names could change.

We disagreed over who was allowed to change them.

A Serious Trade Fight Wrapped in a Joke

Strip away the memes and the map jokes and the underlying issue is consequential.

The United States and Canada share one of the world’s largest trading relationships. Tariffs and retaliation can affect manufacturers, farmers, consumers and workers on both sides of the border.

Trump’s approach is to use the size of the American market as leverage and make clear that allies will not automatically receive exemptions from his America First trade policy.

Critics see unnecessary antagonism toward a longtime ally.

Supporters see a president finally willing to demand reciprocity even when the country on the other side of the negotiating table is a friend.

Lake America has become a symbol of that fight — simultaneously serious policy messaging and a giant international troll.

And now America has a Gulf and a Lake.

Canada may want to negotiate before Trump discovers mountains.