Justice Ketanji Brown Jackson issued her first majority opinion Tuesday since joining the U.S. Supreme Court.Jackson wrote the opinion in the case of Delaware vs. Pennsylvania Et. Al — a case concerning a dispute between multiple states on escheatment of unclaimed money. The court overruled objections from Delaware and greenlighted the continued authority of a special master in the proceedings consistent with the court opinion.The eight other justices unanimously supported Parts I, II, III, and IV‑A of the opinion. She was joined by Chief Justice John Roberts and Just …