.gov is for US government. The US and its citizens are commonly referred to as “Americans”.

The irony is that usa.gov already exists, and is also a website dedicated to where to find information on various government services. But there's no AI on it, so it must be bad.

What a waste, though: two completely separate government websites with the exact same purpose, going about it in different ways. Maybe DOGE should have been more interested in stuff like this, instead of cutting things that ended up hurting people.

At any rate, the demonym for people who live in the US is "American". That's just how it is, has been for decades, and, frankly, arguing against that is what's making it political.