John Marshall Harlan II,
Berra v. United States — Opinion of the Court
“ The Government's whole argument rests on the stark premise that Congress has left to the district attorney or the Attorney General the power to say whether the judge and jury must punish identical conduct as a felony or as a misdemeanor.A basic principle of our criminal law is that the Government only prosecutes people for crimes under statutes passed by Congress which fairly and clearly define the conduct made criminal and the punishment which can be administered. ”
