Two Rules, One Conflict

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Apply the Supremacy Clause carefully while preserving constitutional limits on federal power.

Article VI identifies the Constitution, federal laws made pursuant to it, and treaties made under U.S. authority as supreme law. This means a state cannot make a conflicting rule controlling simply by declaring that it prefers its own policy. The phrase made pursuant to the Constitution matters: supremacy is not a claim that any action labeled federal is automatically constitutional. A proper analysis identifies authority and the actual conflict.

McCulloch v. Maryland in 1819 illustrates the issue. The Supreme Court upheld Congress’s authority to create a national bank and rejected Maryland’s tax on that federal bank. The case linked a valid federal institution to protection against a state measure that would interfere with it. The holding did not erase state government or make every state law invalid. Federal and state governments continue to exercise different and sometimes overlapping powers.

Your fictional conflict desk receives simplified rules. Each card expressly tells you whether the federal rule is constitutionally valid and whether it sets a minimum or a complete exclusive requirement. These assumptions make the learning task definite; they are not descriptions of current product law. You must distinguish an actual conflict from compatible rules and from an unresolved constitutional question. The best answer explains the relationship, not merely the level printed on a document.

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