Here we go again. The high court on Monday threw out the entire federal statute, opening the way for states to decide for themselves whether to legalize sports betting, and in the Mid-Atlantic, many have been preparing for that eventuality. In Delaware, where a limited professional football betting program was grandfathered in by the 1992 federal law, state officials have quietly been moving to immediately launch expanded offerings should the Supreme Court rule as it did Monday. Pennsylvania last year enacted a law allowing sports betting, contingent on the court's decision. West Virginia did the same in March. And New Jersey is the state whose lawsuit led to this decision in the first place. Because Maryland failed to get a referendum on the 2018 ballot, the earliest that voters could approve legal sports betting here would be 2020.