what is the unanswered question of the nullification crisis?

1. Does the federal absolute power to take tariffs on goods?
2. are do the states have the right to nullify other states laws?
3. The federal government, or the states have greater things in power?
4. Do the states have the right to secede from the union?

The unanswered question of the nullification crisis is whether or not the states have the right to nullify federal laws.