It was too flimsy. It failed to take into account real issues between the state and national governments. It took a long time to approve because the central, national government was designed weak, essentially impossible to emend, states had their own money and foreign policy, and the national government proved unable to quell rebellions (proved by Shay’s Rebellion.) All this proves that the main issue is the fact the central government was weakened and state governments had too much control over the fate of the union.