The US gov will make substantial efforts to help you if you're caught in a war zone. That's a big plus if you live or travel to dangerous areas. I'm a Canadian, but I've heard stories about people working overseas with other foreign workers. When things get bad the American's are quickly evacuated, other not so quickly.
Also if you ever move to the US you immediately, or at least very quickly, qualify for programs you never paid into. Medicare if you're old, in state tuition if you have kids, etc.
Also if you ever move to the US you immediately, or at least very quickly, qualify for programs you never paid into. Medicare if you're old, in state tuition if you have kids, etc.