On December 22 and 23, U.S. Bank National Association, as trustee for three RMBS trusts, filed three separate summonses with notice in the Supreme Court of the State of New York. U.S. Bank alleges that Citigroup misrepresented the quality of mortgage loans underlying $528 million in RMBS, and that it breached its duties as servicer by failing to notify the trustee of representation and warranty breaches that it discovered. The trustee seeks compensatory and rescissory damages, along with repurchase of loans not complying with the applicable representations and warranties. Summons with Notice (2007-AMC2).  Summons with Notice (2007-AHL2). Summons with Notice (2007-AR7).