The Federal Housing Finance Agency may pursue a fraud lawsuit against Ally Financial despite the bankruptcy status of Ally’s Residential Capital mortgage unit, a Manhattan federal judge ruled this week. U.S. District Court Judge Denise Cote denied Ally’s request to stay the FHFA’s litigation, a typical motion by bankrupt debtors to defer litigation as they seek to reorganize. In 2011, the FHFA filed 18 lawsuits alleging that Ally and other large financial institutions misrepresented the quality of non-agency mortgage-backed securities sold to Fannie Mae and Freddie Mac before the 2008 financial crisis.