High Quality Content by WIKIPEDIA articles! There are many states in the United States where a convict can be released on parole after a decade or more has passed. For example, sentences of "15 years to life" or "25 years to life" may be given; this is called an "indeterminate life sentence`", while a sentence of "life without the possibility of parole" is called a "determinate life sentence". Even when a sentence specifically denies the possibility of parole, government officials may have the power to grant amnesty or reprieves, or commute a sentence to time served.