Citing a lengthy list of concerns, the advocacy group Better Markets is challenging the U.S. Justice Department’s recent $13 billion settlement with JPMorgan Chase, calling the agreement โ€œunlawful and unprecedented.โ€

In November, the Justice Department announced the settlement with banking giant JPMorgan to resolve claims related to its packaging, marketing, sale, and issuance of residential mortgage-backed securities. The largest settlement with a single entity in American history, it also covers securities sold by Bear Stearns and Washington Mutual prior to Jan. 1, 2009.