MILWAUKEE - A peace activist who went to Iraq to serve as a "human shield" against the U.S. invasion is challenging $8,000 in federal fines. Ryan Clancy, 28, filed a lawsuit against the Treasury Department in federal court Thursday. ADVERTISEMENT The department alleges Clancy went to Iraq in violation of sanctions and offered his services to the Iraqi government to shield its facilities from possible military action. Clancy was in Iraq from Jan. 28, 2003, to March 7, 2003, according the lawsuit. The United States attacked Iraq on March 19, 2003.