Res judicata from arbitration

The parties arbitrated whether certain offshore oil dealings violated RICO.  Grynberg v. BP, PLC, No. 12-20291 (June 7, 2013, unpublished).  The arbitrator found that the claimant did not establish damage and dismissed that claim, noting that he lacked authority to determine whether any criminal violation of RICO occurred. The Fifth Circuit affirmed the dismissal of a subsequent RICO lawsuit on the grounds of res judicata, finding that the arbitrator’s ruling was on the merits and not jurisdictional.