Mealey's (January 6, 2022, 10:19 AM EST) -- NEW ORLEANS — A Fifth Circuit U.S. Court of Appeals panel on Jan. 4 refused to rehear an appeal brought by the heirs of a Saudi sheikh challenging the dismissal of their bid to enforce an arbitral award worth approximately $18 billion against a Saudi oil company that the panel previously said was immune from the suit as an instrumentality of a foreign state....