Which description best captures Congress's power under the Commerce Clause?

Which description best captures Congress's power under the Commerce Clause?

• A. Congress may regulate channels of interstate commerce and instrumentalities of such commerce.
• B. Congress may regulate only goods that cross state lines and nothing more.
• C. Congress may regulate channels of interstate commerce and instrumentalities, and activities with substantial economic effect when aggregated.
• D. Congress has no authority to regulate economic activity under the Commerce Clause.

Answer: (C)

The main concept tested is the scope of Congress's power under the Commerce Clause, which covers three areas: channels of interstate commerce, instrumentalities of interstate commerce, and activities that, in the aggregate, have a substantial economic effect on interstate commerce. This is why the best description includes all three: Congress may regulate channels and instrumentalities, and it may regulate local activities when their combined impact on interstate commerce is substantial. This broader view comes from cases like Wickard v. Filburn, where even wheat grown for personal use could be regulated because its aggregate effect on the market had interstate implications. In contrast, regulating only goods that cross state lines ignores the vast reach allowed by the substantial-effect standard; saying Congress has no authority is contrary to longstanding case law.

The main concept tested is the scope of Congress's power under the Commerce Clause, which covers three areas: channels of interstate commerce, instrumentalities of interstate commerce, and activities that, in the aggregate, have a substantial economic effect on interstate commerce. This is why the best description includes all three: Congress may regulate channels and instrumentalities, and it may regulate local activities when their combined impact on interstate commerce is substantial. This broader view comes from cases like Wickard v. Filburn, where even wheat grown for personal use could be regulated because its aggregate effect on the market had interstate implications. In contrast, regulating only goods that cross state lines ignores the vast reach allowed by the substantial-effect standard; saying Congress has no authority is contrary to longstanding case law.