Facts of the Case

In 1972, twenty one states were members of the Multistate Tax Compact, a body formed by states to assist them in formulating and administering tax law relating to multistate businesses. The Compact had not received congressional approval.

Question

Did the formation of this group violate the the Compact Clause of Article I?

Conclusion

The Court found no constitutional violation. The Compact did not enhance state political power at the expense of the United States; it not confer to states powers which they did not already possess; it did not involve any delegation of state power to the Commission. Furthermore, argued Justice Powell, each state was free to withdraw from the group at any time.