Horace Gray, Mackin v. United States — Opinion of the Court
“ The constitution protecting every one from being prosecuted in a court of the United States without the intervention of a grand jury, for any crime which is subject by law to an infamous punishment, no declaration of congress is needed to secure, or competent to defeat, the constitutional safeguard. What punishment shall be considered as infamous may be affected by the changes of public opinion from one age to another, and for more than a century imprisonment at hard labor in the state prison or penitentiary has been considered an infamous punishment in England and America. ”
