Katzenbach v. McClung
McClung argued that the Civil Rights Act was unconstitutional, at least as applied to a small, private business such as his. McClung further argued that the amount of food purchased by Ollie's that actually crossed state lines (about half of the food at Ollie's) was so small that Ollie's effectively had no effect on interstate commerce (although McClung admitted that a significant amount of Ollie's business was to interstate travelers). Because of this, McClung argued that Congress had no power to regulate Ollie's Barbecue under the Commerce Clause.