Originally posted by MRRiley Looks like where they get you is in that phrase "finally acquitted" and in the ability to reopen a case even after acquittal under certain circumstances. U.S. laws only give the state one bite at the criminal case apple. An acquittal in a criminal court at any level of the judicial process is FINAL! The state cannot appeal an acquittal even if the prosecution royally screwed up. Basically the only party who has a right or need to appeal a court's decision in a criminal court is the convicted defendant (no reason to appeal if acquitted). The best the state can do is find something else to charge the person with (which then opens the state to charges of malicious prosecution).
Civil matters, of course, are different... allowing appeals by either side or even a concerned 3rd party.
Mike, actually the right of the prosecution to appeal varies from state to state. In some states, there is absolutely no appeal. In other states, the prosecution can appeal, but the rights are much more limited than those of the defendant because of double jeopardy. In many states, for example, if there is an issue as to admissibility of evidence, the judge can hear that before the trial begins (and "jeopardy" attaches) and that ruling can be appealed by either side. Another example would be that if the entire trial was fixed, jeopardy may not have attached even after acquittal, and the prosecution can seek review.