Under the 10A limit on federal power, which statement is correct?

• A. Congress cannot regulate state governments' commercial activities.
• B. Congress may commandeer state legislatures to enact laws.
• C. Congress may compel states to enact specific laws.
• D. Congress may attach conditions to grants to induce state action.

Answer: (D)

The main idea here is how the Tenth Amendment limits federal power and how Congress can engage with states without direct commandeering. The federal government cannot force state legislatures to enact or enforce federal statutes—that would be an improper commandeering of state governments. But Congress can influence state action through the spending power by attaching conditions to federal grants, as long as those conditions are clear, related to the federal program, and not coercively coercive.

So the correct statement reflects this accepted approach: Congress may attach conditions to grants to induce state action. This is the permissible “carrot” method, allowing the federal government to achieve national objectives without directly commandeering state governments.