The American Civil Liberties Union (ACLU) is our nation's guardian of liberty, working daily in courts, legislatures and communities to defend and preserve the individual rights and liberties that the Constitution and laws of the United States guarantee everyone in this country. When freedom is under attack in Congress and state legislatures, an engaged populace is its first line of defense. Take action to let law makers know that we want them to protect our civil liberties. Because freedom can't protect itself!