ST. LOUIS - The Eighth Circuit U.S. Court of Appeals on July 11 affirmed the dismissal of a suit arising from JP Morgan Chase Bank's (Chase) assumption of a loan from the failed Washington Mutual Bank (WaMu), finding that amendment of the plaintiffs' Real Estate Settlement Practices Act (RESPA) claim would be futile and that their non-RESPA claims are barred by res judicata (Christopher Hintz, et al. v. JPMorgan Chase Bank, et al., No. 11-1560, 8th Cir.; 2012 U.S. App. LEXIS 14121).