Juries clearly have the power to nullify; whether they also have the right to nullify is another question. Once a jury returns a verdict of "Not Guilty," that verdict cannot be questioned by any court and the "double jeopardy" clause of the Constitution prohibits a retrial on the same charge. Early in our history, judges often informed jurors of their nullification right. For example, our first Chief Justice, John Jay, told jurors: "You have a right to take upon yourselves to judge [both the facts and law]." In 1805, one of the charges against Justice Samuel Chase in his impeachment trial was that he wrongly prevented an attorney from arguing to a jury that the law should not be followed. Judicial acceptance of nullification began to wane, however, in the late 1800s. In 1895, in United States v Sparf, the U. S. Supreme Court voted 7 to 2 to uphold the conviction in a case in which the trial judge refused the defense attorney's request to let the jury know of their nullification power. Courts recently have been reluctant to encourage jury nullification, and in fact have taken several steps to prevent it. In most jurisdictions, judges instruct jurors that it is their duty to apply the law as it is given to them, whether they agree with the law or not. Only in a handful of states are jurors told that they have the power to judge both the facts and the law of the case. Most judges also will prohibit attorneys from using their closing arguments to directly appeal to jurors to nullify the law. Recently, several courts have indicated that judges also have the right, when it is brought to their attention by other jurors, to remove (prior to a verdict, of course) from juries any juror who makes clear his or her intention to vote to nullify the law.