What is the unanswered question of the nullification crisis

The unanswered question of the Nullification Crisis is whether a state has the right to nullify federal laws within its borders. While the immediate issue during the Nullification Crisis in the 1830s was South Carolina's attempt to nullify the federal tariff, the larger question at stake was the extent of state sovereignty and the balance of power between the federal government and the individual states. This question remained unresolved and continues to be debated politically and legally today.