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."

Gov. Ron DeSantis may have been the first official to use President's Trump's new name for the Gulf of Mexico in an official capacity.

For years, as disputes over names on the map riled up nationalist passions in several parts of the world, US policymakers have watched warily, trying to stay out or to quietly encourage peace. "For us it is still the Gulf of Mexico and for the entire world it is still the Gulf of Mexico,