(July 11, 2023, 2:12 PM EDT) -- WASHINGTON, D.C. — Sovereign immunity does not bar fraud and racketeering claims leveled against an Indian tribe’s business council by a tribal member and her company because the council waived its immunity in a mandatory arbitration clause in the parties’ joint venture agreement, the company and owner tell the U.S. Supreme Court in a petition for a writ of certiorari....