The Founding Fathers guaranteed trial by jury three times in the Constitution-more than any other right-since juries can serve as the final check on government's power to enforce unjust, immoral, or oppressive laws. But in America today, how independent can a jury be? How much power does a jury have to not only judge a defendant's actions, but the merits of the law? What happens when jurors decide in criminal trials not to enforce the law or not to...