Kassel v. Consolidated Freightways Corp.
Kassel v. Consolidated Freightways Corp., 450 U.S. 662 (1981), was a United States Supreme Court case involving the application of the Dormant Commerce Clause to an Iowa state statute restricting the length of tractor-trailers.
Source: Wikipedia — Kassel v. Consolidated Freightways Corp. (CC BY-SA 4.0)