Two completely different things.
No, it doesn't require interpreting the powers of Congress. It requires interpreting the law which Congress passed.
No, it is not. A law passed by Congress is not the same thing as the US Constitution.
No, it is not.
A law which Congress passed is not determining the powers of Congress.
Irrelevant.
Congress has that power.
No, it is determining whether or not a law passed by Congress adheres to the US Constitution. The law passed by Congress is being interpreted, NOT the US Constitution itself.
It is completely different. Your argument on this interpretation issue is a false equivalence. Congress has the power to create a national bank.
Yes, it does.