In May 2007, the U.S. filed an action against the Holy Land Foundation (the largest Muslim charity in the United States at the time) for providing funds to Hamas, and federal prosecutors filed pleadings. Along with 245 other organizations, they listed CAIR (and its chairman emeritus, Omar Ahmad), Islamic Society of North America (largest Muslim umbrella organization in the United States), Muslim American Society and North American Islamic Trust as unindicted co-conspirators, a legal designation that can be employed for a variety of reasons including grants of immunity, pragmatic considerations, and evidentiary concerns. While being listed as co-conspirator does not mean that CAIR has been charged with anything, the organization was concerned that the label will forever taint it.