On June 8, 2018, monoline insurer Ambac Assurance Corporation (“Ambac“) filed a complaint in the United States District Court for the Southern District of New York against U.S. Bank National Association (“U.S. Bank“), trustee of the Harborview Mortgage Loan Trust 2005-10 (the “Trust“). The complaint alleges that U.S. Bank breached certain contractual and common law duties when it agreed to a proposed $94 million settlement of an ongoing RMBS repurchase action in New York state court against Bank of America, N.A. and certain affiliates, as successors to Countrywide Home Loans, Inc. (the “Countrywide Action“). Among other things, Ambac alleges that U.S. Bank was required to observe heightened duties of care when an Event of Default occurred under the governing PSA, and that U.S. Bank breached those duties when it agreed to settle the Countrywide Action for approximately 28% of the amount that its expert opined it was entitled to recover. Ambac further alleges that U.S. Bank breached the PSA by incorrectly accounting for recoveries received by the Trust. The complaint asserts two claims for declaratory judgments, two claims for breach of contract, and one claim for breach of fiduciary duty.  Complaint.