Byron White, Minor v. United States — Opinion of the Court
“ In the present case, compliance by selling is foreclosed as a viable option, not because the seller might incriminate himself, but because the buyer refuses to meet a specified condition. Nothing in the Fifth Amendment prevents Congress from restricting a seller's market to specified classes of duly licensed buyers. And although the buyer's refusal to comply with the Act's requirements may stem from his fear of incrimination, the buyer's personal privilege cannot be raised by the seller as an excuse for evading the clear statutory requirements. ”
