by John Marshall Harlan, Baldy v. Hunter — Opinion of the Court
“ That any person owing allegiance to an organized government can make a contract by which, for the sake of gain, he contributes most substantially and knowingly to the vital necessities of a treasonable conspiracy against its existence, and then in a court of that government base successfully his rights on such a transaction, is opposed to all that we have learned of the invalidity of immoral contracts. ”
