William O. Douglas,
Simpson v. United Oil Company of California…
“ If the 'consignment' agreement achieves resale price maintenance in violation of the Sherman Act, it and the lease are being used to injure interstate commerce by depriving independent dealers of the exercise of free judgment whether to become consignees at all, or remain consignees, and, in any event, to sell at competitive prices. The fact that a retailer can refuse to deal does not give the supplier immunity if the arrangement is one of those schemes condemned by the antitrust laws. ”
