Part of a legal description of a boundary line of Dixie County, for instance, says it goes "southerly down the thread of the main stream of said Suwannee River to the Gulf of Mexico; thence along said Gulf of Mexico, including the waters of said gulf within the jurisdiction of the State of Florida, to the mouth of the Steinhatchee River."

However, Trump's order only applies to the U.S. government's official position. Though headquartered in the U.S., corporations such as Google and Apple aren't beholden to the president's directive to rename the landmarks, raising questions as to whether they'll update their popular map services to reflect the government's stance.

The US Department of the Interior (DoI) on Friday said that the Gulf of Mexico is now to be known as the "Gulf of America" following an executive order by US President Donald Trump. On Monday, Trump issued an order saying that the body of water on the south coast of the US and east coast of Mexico would be renamed in honour of "American greatness.