Why can't courts of various levels certify questions to legislatures just like, for example, federal courts do to state supreme courts? They could ask something like: "Should 99 U.S.C. 1234 be interpreted to allow cats to rollerskate on federal property?" Then the legislature votes. There could be just an up-or-down yes/no vote, or maybe yes/no/no opinion, or yes/no/stare decisis rules, or something like that. Maybe this would be too taxing on the legislature's time, though.