I have since read a minor translation....and it seems that Nino Scalia wrote the decision.
He does not suffer leftist doctrine lightly, I consider him the best constitutiional scholar on the court....so I assume it was a constitutional issue that he would have loved to allow the state to rule on the issue, but it was not in the states purview to do so. The real problem is that the Feds are not obeying the constitution and as that fact has not currently been put before the court, he had no choice than to rule against the state.
Take the time to read Thomas’ dissent. He nailed it.