Mealey's (May 4, 2020, 1:16 PM EDT) -- WASHINGTON, D.C. — U.S. Supreme Court guidance is needed for an Eighth Circuit U.S. Court of Appeals ruling that a tax by South Dakota on goods and services purchased at a tribal casino by nontribal members is unlawful because the opinion conflicts with a decades-old federal preemption decision, state officials tell the high court in their May 1 reply brief (Kristi Noem, et al. v. Flandreau Santee Sioux Tribe, No. 19-1056, U.S. Sup.)....