In 1942, deciding the case of Wickard v. Filburn, the U.S. Supreme Court deemed the wheat grown by an Ohio farmer purely for his own use and consumption—not for sale—to “exert a substantial effect on interstate commerce.” This infamous decision led many to conclude that the scope of Congress’s authority under the Commerce Clause is essentially unlimited.
Now that understanding may be upended by a tiny, blind arachnid known as the “Bone Cave harvestman” (scientific name: Texella reyesi). This cave-dwelling invertebrate, which resembles a spider, has been included by the U.S. Fish and Wildlife Service on the Endangered Species list since 1988. Pursuant to the Endangered Species Act and its enabling regulations, the “habitats” of endangered species cannot be modified or “degraded” without a federal permit.