[sparrish]

It's not named after 'us'.

All those in America (South, North, Central) are called Americans.

I spent several years in Paraguay where I met a lot of South Americans.

Mexicans are North Americans and the 'Gulf of America' is more inclusive considering 1/2 of the land mass touching it belongs to the US.

[gritspartan]

Except, no part of Central nor South America touches the Gulf of Mexico. The only three countries which coasts on the Gulf are the US, Mexico, and Cuba. All of these are in North America, and I'm pretty the latter two are not going to go along with the idea.

[danorama]

I'm gonna take a wild guess and say that "inclusion" wasn't Trump's intent here.