Also known as: substantially affects interstate commerce · substantial effect on interstate commerce · Commerce Clause · affecting commerce
Written by attorneys · grounded in primary & secondary sources — see below
A constitutional test under which Congress may regulate local activity when that activity, considered in the aggregate, exerts a substantial economic effect on interstate commerce.
Spencer Silver ships live baitfish from his State A hatchery into State B lakes. State B enacts a total ban on such imports to protect native fish populations from disease. The ban survives challenge because it advances a legitimate ecological interest without reasonable nondiscriminatory alternatives.
Skylar Sullivan's disposal company in State C trucks hazardous waste from State D into State E landfills. State E charges out-of-state haulers double the fee imposed on local waste. The surcharge violates the Dormant Commerce Clause because origin-based cost differentials are presumptively invalid.
Select any source to read its text and confirm it supports the definition.
Stephen Shaw's private hauler contracts to move construction debris from State F projects. State F's ordinance requires all debris to go to a newly created public transfer station. The ordinance receives lenient review and is upheld because it favors a traditional government function rather than private economic protectionism.
Steven Silva works as a maintenance supervisor for a State G county parks department. Congress extends minimum-wage and overtime rules to state and local employees. The extension is sustained because states are protected through the political process rather than judicial limits on traditional functions.
Sophia Singh operates a nuclear-waste transport firm moving spent fuel from State H reactors into State I storage. Congress expressly permits State I to impose graduated surcharges on out-of-state waste. The authorized discrimination does not violate the Dormant Commerce Clause.
Sarah Sullivan carries a handgun onto the grounds of a State J high school. Federal prosecutors charge her under the Gun-Free School Zones Act. The statute exceeds Congress's commerce power because mere possession near a school lacks a substantial economic effect on interstate commerce.
Local activity falls within the power when, in the aggregate, it exerts a substantial economic effect on interstate commerce. Courts consider the cumulative impact of many similar instances rather than isolating a single actor's conduct.
No. The test focuses on whether the class of activity, taken together, substantially affects interstate commerce, even if individual instances are noncommercial or occur entirely within one state.
The substantial-economic-effect standard replaced formal distinctions between direct and indirect effects. Courts now examine the actual economic consequences of the regulated activity rather than its formal characterization as production or consumption.
…be local and though it may not be regarded as commerce, it may still, whatever its nature, be reached by Congress if it exerts a substantial economic effect on interstate commerce, and this irrespective of whether such effect is what might at some earlier time have been defined as direct' or indirect.' " Id. , at 125. The Wickard Court emphasized that although…