It doesn't seem like you have any idea of what you're talking about. Have you ever lived or worked in France? Or anywhere outside of the US? If not, why are you commenting?
The high unemployment in France is mostly structural. Unlike in the United States, French people who are qualified for a particular job would generally prefer to remain unemployed than take a job that is not in their field. There are two primary reasons for this. The first is that they can: unemployment benefits mean that they are rarely living hand-to-mouth and are not forced to take a job at McDonald's just to get by.
The second is cultural. Unlike in the United States, where "sucking it up" and getting a menial job because it's all that's available is seen as something sort of heroic, in France it's quite looked down upon. People in the US switch careers and try new things much more than French people do, and so the culture accepts this more. In France if you busted your ass to go to the right school and get a particular degree, you are expected to stay in your chosen field. Doing otherwise will penalise you.
As for job availability, it is quite hard to be young in France, and this is something everyone is aware of but no one is quite sure how to fix. Young people straight out of school with no meaningful work experience frequently find getting that key first job very difficult.
For someone mid-career, however, the job market in France -- particularly in Paris -- is incredibly dynamic, however. There's a lot of demand for qualified people. And if you are American, you will benefit in two important ways. First, the French love Americans, and they love America. So they will automatically give you the benefit of the doubt just because they associate you with so many good things. The second way that you benefit is that the French are very focused on where people's degrees come from -- if you're French, they will peg you as a person based on which diploma you have, which school you went to, etc -- and if you are from the "wrong" school you will find doors closed in your face. This is a big issue for French people. But Americans... well, how to put it. French people won't know any American universities by name, apart from perhaps Harvard. But generally -- and this comes back to loving Americans -- they think American universities are good. So they will kind of assume that you went to a good school if you say you did, and you can thus magically bypass all the bullshit of "we only hire people who went to X here."
The downside for most Americans is that you can't realistically get much of a job if you don't speak French, and work visas are apparently a bit of a pain. I'm an EU citizen so I can't speak to that.