Potter Stewart,
United States v. Jackson (390 U.S. 570…
“ For the evil in the federal statute is not that it necessarily coerces guilty pleas and jury waivers but simply that it needlessly encourages them. A procedure need not be inherently coercive in order that it be held to impose an impermissible burden upon the assertion of a constitutional right. Thus the fact that the Federal Kidnaping Act tends to discourage defendants from insisting upon their innocence and demanding trial by jury hardly implies that every defendant who enters a guilty plea to a charge under the Act does so involuntarily. ”
