Earlier quoted context omitted.
Yes, that's exactly how it works. The US Supreme Court can rule a law unconstitutional, and that's that.
So basically it's the same as here, the supreme court (which is appointed, not elected) has power over elected officials? (Because they can decide what is constitutional or not) Edit: I have more questions but for some reason I can't reply to your replies :(
The idea in US constitutional law is one of balance: we have three branches of government, and each are granted powers that can act as a check on the powers of the others. It's far from perfect in practice, but the intent is good, I think.