I'm glad it has good roots, and I see no reason why you can't keep calling it Gulf of Mexico if you want.

Many places over time have had multiple names. There is no reason people can't keep calling it the Gulf of Mexico, and governments can call it the Gulf of Mexico if they like. I'm surprised we didn't rename it in theSpanish-Americamn war.

To me, Gulf of the United States would have been bad, as would Gulf of Texas or Gulf of Florida.

I think Gulf of America is fine, because its right there on the coast of the North American continent. All the land mass surrounding it is North America. So if we have to rename it, I don't think its a bad name... Whether it precedes the united states or not, people seem to rename things or assign them multiple names... Sometimes its politics, sometimes its language. Sometimes its to honor an event, or to make a song lyric. I really think its not that big of a deal, and I will call it what I like. I'm thinking the Gulf of Asteroid.