What is the theory that allows a state to appeal a judgment of its own supreme court to the US Supreme Court? Suppose John Doe is facing criminal prosecution in Florida. He raises a 4th Amendment issue, and the Florida Supreme Court grants him relief. At this point, the state of Florida can appeal to the US Supreme Court, and the US Supreme Court can, if it chooses, review the judgment of the Florida Supreme Court. What puzzles me is this: at this point, there is no federal harm to either party. True, the Florida Supreme Court might have used an erroneous federal constitutional theory to tie the hands of the Florida Attorney General, but nothing in the US Constitution says they can't do that. What is the justification that prevents this from being considered an abstract question?
The Supremacy Clause. U.S. Constitution, Article VI, Clause 2: This Constitution, and the Laws of the United States which shall be made in pursuance thereof; and all treaties made, or which shall be made, under the authority of the United States, shall be the supreme law of the land; and the judges in every state shall be bound thereby, anything in the constitution or laws of any state to the contrary notwithstanding. [emphasis mine] This is also known as the "Supremacy Clause" of the U.S. Constitution. It prevents any law of any state from acting contrary to the federal constitution. A comment correctly cites multiple cases that use this clause, in part, as the basis for SCOTUS' authority to review State Supreme Court decisions. So in your hypothetical, the federal issue in play is the clarity of the federal constitution which supersedes state law.
Generally, a local county judge’s decision is not binding on the judgement of another judge unless it is that of an appellate division. The law of the case principle could be referred to as an argument if it would have been decided by another judge in the same case (some courtships work on a rotary basis with different judges sitting over a single case). This would mean that the court would give greater deference to that decision; however, applying the principle is a matter of administrative preference to save resources of the court. Whether or not the other judge would reconsider the matter would be within their discretion absent binding authority to the contrary as a “law of the case” is not binding. In fact, even if it would have been the same judge with the exact same facts deciding the matter in a final judgement, there wouldn’t be much to do. One could argue that deciding differently is a violation of the Fourteenth Amendment which, if the judge fails to explain the different decision on the exact same facts may have a reasonable probability to get overturned provided the unconstitutionality finding was correct in the first place. If the matter was, in fact, unconstitutional, appeals may overturn a contrary judgement if the issue is brought up in the lower court and enters the court record. It may have some weight still to cite the decision of the other judge as the argument may be given more weight than if merely delivered as the argument of counsel.
I believe that you will find something similar to this idea in the philosophy of John Locke. Locke was an early advocate of the governmental separation of powers, and his political works significantly influenced several of the framers of the US Constitution. (See Gary Willis, Explaining America for more on this.) There was also a maxim, several times quoted in The Federalist That &quot;no man should be judge in his own cause&quot;. This meant that, insofar as possible, the rights and powers of any person or institution should be determined and limited by some other person or body. This is part of the &quot;checks and balances&quot; theory of the US Constitution. All these are, at best, rules of thumb for the design of governmental systems and legal structures. Such maxims are not themselves enforceable law, and they are not invariably followed.
The United States would be one such country. I'm sure it is not the only one. In the case of countries with constitutional courts there is basically no one to second guess their interpretations which is also true when the apex court in a country provides an opinion. Since no one can overrule many of these courts, they are allowed to do what they want.
The question actually asked, "what legal theories would support or harm...", is somewhat unclear. But what the questioner seems to be asking is, basically, what would happen if you tried it? The answer, it seems to me, is pretty straightforward. In the hypothetical case, you have been publishing a notice for years, saying "I have not been served with a subpoena." You then get served with a subpoena that includes a gag order. The gag order, presumably, includes wording prohibiting you from revealing the existence of the subpoena. You then cease publication of the warrant canary. By doing so, you have revealed the existence of the subpoena, and you are in violation of the gag order. You will be subject to whatever penalties you would be subject to if you violated it in some other way; for example, by publishing a notice that said, "Hey! We got a subpoena! It's a secret!" The distinction between revealing the existence of the subpoena by action, rather than by inaction, is a false one. It's exactly the kind of cutesy legal formality that non-lawyers love to rely on, but real judges ignore. If you tell someone: "Hey, you know John Smith's three sons, Joe, Ted, and Bill? Joe and Ted are good people; they have never molested any children. As for Bill--well, I don't have anything to say about Bill." If Bill is not a child molester, you have defamed him, and you are not going to convince a judge otherwise. The EFF link you link to tries to claim it'll "work" because courts are reluctant to enforce speech. Even if that were true, that might mean your canary would be effective in the sense of giving the public notice of the subpoena. That doesn't mean you wouldn't be liable for giving the public notice. For example: I put up a billboard saying "Bill Smith is a pedophile." Even if the court can't force me to add the word "not", that doesn't mean the billboard isn't defamatory. Realistically, though, courts compel speech all the time. Court-ordered apologies, disclosures, and notices are not unusual. And if ever a court would be inclined to compel speech, it would be in a situation like this one, where a company intentionally set out to get around a gag order with this kind of convoluted sea-lawyering.
No The judicial Power of the United States, shall be vested in one supreme Court, and in such inferior Courts as the Congress may from time to time ordain and establish. Any courts the Congress creates are, by definition, inferior. Of course, Congress can overrule a SCOTUS decision by passing a law to that effect,unless the decision defines a right under the Constitution. So they couldn’t overturn Roe but they could overturn Dobbs. It’s largely the gutlessness of Congress in grappling with controversial issues that has put SCOTUS in the position of lawmaker.
Two reasons that spring to mind: The Respondent wanted the appeal to proceed so that they would have definitive case law from a higher court. That is they thought they would win and, quite possibly, the appellant thought they would win too. Rolling the dice on a losing proposition is not so bad if you have no skin in the game so the Respondent is encouraging the appeal. Its a commercial PR decision - it looks bad in the press if you use your money and power to prevent someone from pursuing their legal rights. This way, they can put their hand on their hearts and say "we gave them every opportunity to prove us wrong".
This happened despite the fact that the marriage and Bible verses requirement were almost surely illegal and similar things have happened on and off, mostly in rural courts with non-attorney judges, for pretty much as long as the U.S. has been a country (and earlier). The trick is that the orders take effect unless someone appeals them, and since deals like this are usually a result of a plea bargain which waives rights to an appeal, and even if the result is simply imposed by the judge, one has to consider if taking the case up on appeal, having the sentence reversed, and then having it remanded to the same judge for resentencing would be worse from the perspective of the defendant, given the broad authority of a sentencing judge in a minor case like this one, than simply accepting the illegal sentence. Also, cases that aren't appealed never create precedents and aren't generally available among resources used by legal researchers, so they systemically evade documentation in easily available sources.