Joseph P. Bradley, Ex parte Nielsen — Opinion of the Court
“ In the present case, it is true, the ground for the habeas corpus was, not the invalidity of an act of congress under which the defendant was indicted, but a second prosecution and trial for the same offense, contrary to an express provision of the constitution; in other words, a constitutional immunity of the defendant was violated by the second trial and judgment. It is difficult to see why a conviction and punishment under an unconstitutional law is more violative of a person's constitutional rights than an unconstitutional conviction and punishment under a valid law. ”
