As part of a torrent of decisions he issued hours after taking office, President Donald Trump declared that the name of America’s tallest mountain be changed from Denali to Mount McKinley, and that the Gulf of Mexico be renamed “The Gulf of America.”

What's in a name change, after all? The water bordered by the Southern United States, Mexico and Cuba will be critical to shipping lanes and vacationers whether it’s called the Gulf of Mexico, as it has been for four centuries,

For nearly half a century, there’s been little thought about the name Congress gave to the Gulf of Mexico Fishery Management Council — until now. On Monday, President Donald Trump signed an order to rename the waterbody to the “Gulf of America” on federal agency maps, contracts, and other documents and communications.