President-elect Donald Trump said Tuesday that he would move to try to rename the Gulf of Mexico to the “Gulf of America.”

Mexico's president sarcastically said that the U.S. should be called "Mexican America" after Trump's vow to rename the Gulf of Mexico the "Gulf of America."

President-elect Donald J. Trump said Tuesday that he planned to change the name of the Gulf of Mexico to the “Gulf of America,” one of several foreign policy proposals that left world leaders reeling. “It has a beautiful ring,” he said of the proposed name change for the body of water that borders several U.S. and Mexican states.

The Mexican president responded to President-elect Trump's contention that the sea should have a more U.S.-centric designation by showing a map from 1607 during a Wednesday press conference. The map, which predates the founding of the United States by more than 150 years, labels all of North America as "América Mexicana” (“Mexican America”).

For decades, history books and maps have labeled the big body of water that sits off the coast of the southern United States and Mexico as the Gulf of Mexico.

As is often the case with Trump, it’s unclear whether his remarks are to be taken at face value or if he's simply trying to stir the pot.

U.S. President-elect Donald Trump wants to rename the Gulf of Mexico the “Gulf of America.” Mexico’s president, Claudia Sheinbaum, came up with her own proposal. CNN’s Becky Anderson explains.