John Marshall Harlan II,
North Carolina v. Pearc Simpson…
“ If, as a matter of policy and practicality, the imposition of an increased sentence on retrial has the same consequences whether effected in the guise of an increase in the degree of offense or an augmentation of punishment, what other factors render one route forbidden and the other permissible under the Double Jeopardy Clause? It cannot be that the provision does not comprehend 'sentences'-as distinguished from 'offenses' for it has long been established that once a prisoner commences service of sentence, the Clause prevents a court from vacating the sentence and then imposing a greater one. ”
