by Sue Finley and T. D. Thornton This story has been updated. The Fifth Circuit United States Court of Appeals on Tuesday denied a motion by the Horseracing Integrity and Safety Act (HISA) Authority for that court to vacate its recent opinion that HISA is unconstitutional. Back on Jan. 3, the HISA Authority had asked for the Fifth Circuit's Nov. 18, 2022, anti-constitutionality order to be vacated based on a federal rewrite of the HISA law in December. Also on Tuesday, separate motions for a rehearing of the case made...