The renaming of the gulf set off a dispute with Mexico, which argued the U.S. had no authority to rename the entire body of water, part of which lies within Mexico’s jurisdiction. Mexico later sued Google over its use of “Gulf of America” for U.S. users.

“Everyone thinks I kid,” Trump said Saturday about his original proposal to rename the gulf. “Everybody smiled, ‘Oh, that’s so funny.’ I did it, right? It’s done.”

In April, Trump joked that he had considered calling it the “Gulf of Trump.”

In August, Trump signed another order directing federal agencies to call Lake Ontario, which borders New York and the Canadian province of Ontario, “Lake America.” The name change came amid an escalating U.S.-Canada tariff war and prompted rebuke from Democratic lawmakers as well as Canadian officials: Canadian Prime Minister Mark Carney rejected the new name, saying Canadians would call it Lake Ontario “then, now and always.”