A federal appeals court refused to let the campaign file a revised complaint. Hamilton "Phil" Fox of the District of Columbia Office of Disciplinary Counsel told the panel that the former New York City mayor, once the top U.S. prosecutor in Manhattan, "weaponized his law license to bring a frivolous action in an attempt to undermine the Constitution." Monday marked the start of weeklong arguments before a hearing committee of the D.C. Board on Professional Responsibility, which could recommend suspending Giuliani's D.C. law license or disbarring him.