You seem convinced that additional appeals can only work in the defendants favor. Suppose that a state supreme court decides to give more rights to defendants u

You seem convinced that additional appeals can only work in the defendants favor. Suppose that a state supreme court decides to give more rights to defendants under its common law. Suppose the state supreme court finds for a defendant based on that. Allowing the prosecution to appeal that decision to the federal supreme court actually HURTS the defendant. I'm not saying there's no federalism in Australia. I'm saying that the federalism is substantially limited by having one general common law to rule them all. And also by imposing a single approach to judicial decision making. Also, I think you continue to misrepresent the situation. You have every right to appeal a violation of your federally-granted rights to the federal Supreme Court. It is only rights granted to you only by your state that cannot, generally, be appealed. As I said above, it also means that prosecutors cannot try to get a decision made for you, by a state court on the basis of state law, overturned by the federal courts. So it cuts both ways.