Gibbs & Brun, the Houston-based law firm that spearheaded a massive investor lawsuit against Bank of America, has drawn a bead on Wells Fargo. The company announced this week that its non-agency MBS investor clients have asked two trustees – U.S. Bank and HSBC – to investigate whether ineligible mortgages were pooled in some $19 billion of Alt A and jumbo MBS issued by Wells Fargo between 2005 and 2007. Some 48 securitization trusts are covered by the action, and Gibbs & Brun said it represented investors who collectively held over a quarter of the voting rights in those trusts. “Clients...