Mealey's (May 31, 2023, 1:13 PM EDT) -- WASHINGTON, D.C. — The Kingdom of Spain and an award-creditor each filed appellant briefs on May 30 in three consolidated cases before the District of Columbia Circuit U.S. Court of Appeals concerning whether European investors’ arbitral awards issued under the Energy Charter Treaty (ECT) can be enforced in the United States despite recent European Union judicial precedents, which Spain says prohibit intra-EU arbitration retroactively....