Answer:
This is known as double jeopardy. Double jeopardy is the prosecution of a person for the same crime more than once. The Fifth Amendment of the United States Constitution includes a prohibition against being "subject for the same offence to be twice put in jeopardy of life or limb," and most state constitutions have similar clauses.
Step-by-step explanation:
In the scenario you've provided, Jeff has already been found not guilty of shoplifting in a trial. If he is then brought to trial again for the same act of shoplifting, this would constitute double jeopardy and would be unconstitutional. However, there is an exception to this rule: if new evidence comes to light that was not available at the time of the first trial, and that evidence might reasonably have led to a different outcome, a person may be retried. But in such case it should be cleared that this new evidence is that substantial which would change the outcome of the trial, otherwise it will be considered as double jeopardy.