President-elect Donald Trump says he plans to rename the Gulf of Mexico to the Gulf of America, because "it's ours." Who owns the Gulf?

Mexican President Claudia Sheinbaum turned the tables on U.S. President-elect Donald Trump’s talk about renaming the Gulf of Mexico as the “Gulf of America.” In what appeared to be a deadpan joke, Sheinbaum suggested the United States be known as “Mexican America” during a press briefing on Wednesday.

The incoming president offhandedly outlined his newest administration priority – changing the name of the Gulf of Mexico. Here’s what to know about the Gulf, the name and the possibility it might change.