Facts
- Congress enacted 23 U.S.C. § 158, directing the Secretary of Transportation to withhold a percentage of federal highway funds from any state that permitted persons under 21 to purchase or publicly possess alcoholic beverages.
- South Dakota permitted 19-year-olds to purchase beer containing up to 3.2% alcohol.
- Because of its drinking-age rule, South Dakota risked losing 5% of its federal highway funds (with the statute later increasing the percentage).
- South Dakota sought declaratory relief, alleging § 158 exceeded Congress’s Spending Clause power and violated the Twenty-first Amendment.
- The federal district court rejected South Dakota’s claims, and the Eighth Circuit affirmed.
- The U.S. Supreme Court granted certiorari.
Issues
- Whether Congress may, under the Spending Clause, condition receipt of a portion of federal highway funds on a state’s adoption of a minimum drinking age of 21, consistent with federalism and the Tenth Amendment.
- Whether § 158 violates the Twenty-first Amendment by improperly intruding on state authority over alcohol regulation.
- Whether the funding condition is so coercive that it becomes unconstitutional compulsion rather than permissible inducement.
Decision
- The Supreme Court affirmed and upheld § 158 as a valid exercise of Congress’s spending power.
- Congress may attach conditions to federal grants to advance the general welfare, even if Congress could not directly mandate the underlying state policy.
- The condition was sufficiently clear and gave states a real choice: comply or forgo a small percentage of highway funds.
- The condition was adequately related to federal interests in highway safety and interstate travel.
- The inducement was not so coercive as to amount to unconstitutional compulsion.
- The Twenty-first Amendment did not invalidate the condition because it did not require states to engage in independently unconstitutional conduct.
- Dissents argued the condition either impermissibly intruded on state alcohol authority (Brennan) or lacked sufficient relatedness to highway funding (O’Connor).
Legal Principles
- Congress may condition federal funds to states to further the general welfare, subject to limits on conditional spending.
- Conditional spending is generally valid when: (1) it serves the general welfare, (2) the condition is unambiguous, (3) the condition is related to a federal interest in the funded program, (4) the condition does not require independently unconstitutional state action, and (5) the inducement is not so coercive that pressure becomes compulsion.
- The Twenty-first Amendment does not categorically bar federal conditional spending related to alcohol; the relevant constraint is whether the condition would induce unconstitutional conduct.
- A relatively small threatened loss of federal funds may be treated as permissible encouragement rather than coercion.
Conclusion
The Court upheld Congress’s use of conditional highway funding to encourage states to adopt a 21-year-old minimum drinking age, establishing a structured framework for evaluating Spending Clause conditions and rejecting challenges based on coercion, the Tenth Amendment, and the Twenty-first Amendment.