Docket 59
Wickard v. Filburn
DecidedNov 9, 1942
9-0unanimous decision
Source: CourtListener.
Court allows Congress to regulate wheat grown for a farmer's own use, not just for sale
Impact9/10
What it does
The ruling upholds a federal penalty on wheat grown beyond a farmer's assigned quota, even when that excess wheat was intended only for the farmer's own consumption on his farm rather than for sale. It establishes that Congress can regulate purely local, non-commercial activity if that activity, combined with similar activity by many other people, has a substantial effect on interstate commerce.
Who benefits
Wheat farmers who comply with acreage quotas benefit from higher, more stable market prices supported by the national wheat program, and the federal government's authority to manage agricultural markets nationally is confirmed.
Who is affected
Farmers who grow wheat beyond their federal acreage allotment for their own use (feeding livestock, home flour, or seed) become subject to marketing penalties and liens on their entire crop, even though none of that excess wheat leaves the farm or enters commerce.
Practical impact
Federal agricultural agencies gained clear authority to regulate farm production intended solely for on-farm use, not just crops sold in markets, extending federal power over economic activity that never crosses state lines. This reasoning became a foundational precedent for later federal regulation of local activities under the Commerce Clause, applied well beyond agriculture to other economic sectors reached by federal law.
Majority reasoning
The Court reasoned that labeling an activity "production" or "consumption" rather than "commerce," or calling its effect "indirect," cannot by itself decide whether Congress may regulate it; what matters is the actual economic effect on interstate commerce. Home-grown wheat that a farmer consumes himself still competes with wheat that would otherwise be bought on the open market, so it affects total supply and price just as marketed wheat does. Although one farmer's own contribution might be trivial, the combined effect of many farmers doing the same thing is far from trivial, and Congress could rationally decide that unregulated home consumption would undermine its goal of stabilizing wheat prices. The Court also rejected the retroactivity and due process claims, finding that the increased penalty applied only to wheat threshed after the amendment took effect, that the farmer received substantial loan and price benefits from the program, and that requiring government regulation as a condition of those benefits did not violate due process. The Court further found the Secretary's radio speech did not improperly influence the marketing quota referendum, since there was no evidence any farmer was misled or that the outcome was affected.
Constitutional question
Does Congress's power to regulate interstate commerce allow it to limit how much wheat a farmer grows for use on his own farm, even if that wheat is never sold or shipped across state lines?
Precedent changed
The Court moved away from earlier decisions and dicta suggesting that activities like production, manufacturing, and mining were categorically "local" and reachable by Congress only if their effects on interstate commerce were "direct" rather than "indirect," a formula associated with cases like Carter v. Carter Coal Co.