This article discusses the Supreme Court's ruling in Rehberg v. Paulk, 132 S. Ct. 1497 (2012), which extended the absolute witness immunity recognized in Briscoe v. LaHue, to grand jury witnesses. In an unanimous opinion, written by Justice Samuel A. Alito, Jr., the Court held that grand jury witnesses are absolutely immune from §1983 liability for their testimony, and even for conspiring to give false testimony.