As featured on Foreign Exchange. A lingering battle over the legacy of the Vietnam War will soon find its way to a New York court room. Later this month a group of Vietnamese citizens will ask a federal appeals court to hold some U.S. chemical companies liable for Agent Orange, a defoliant used by the U.S. military in Vietnam. The suit was dismissed two years ago in a lower court on grounds that it had no basis in U.S. or international law. Agent Orange has been blamed for a range of health issues, including birth defects, but rigorous scientific study has been complicated by some very political tensions. Reporter Christie Aschwanden and filmmaker George Lerner recently traveled to Vietnam on behalf of the Pulitzer Center on Crisis Reporting and filed this clip. For more information, visit www.pulitzercenter.org/showproject.cfm?id=31.