Your boss can't make you work ridiculous hours

Correct me if I'm wrong, i don't know the rules in the us, in Germany you're simply not allowed to work more than an average of eight hours per day. So you can not only not be forced to work more, you can't even be asked to. Even if it seems to be voluntary, often it isn't.

We might have to pass on hiring you, there appears to be a problem with the culture fit.