Do law enforcement agencies have to announce DUI checkpoints in advance? What does the 1990 Supreme Court case out of Michigan which found sobriety checkpoints did not constitute a violation of the fourth amendment require, explicitly or implicitly as the case may be, in terms of law enforcement agencies announcing or publicizing their planned checkpoints in advance? Does it require agencies or departments to publish in advance the specific time, location and purpose of checkpoints in advance? Does it require agencies or departments to announce that checkpoints will be operated within some jurisdiction over some period of time? Does it not require but suggest either of the above? Bonus question - does some other national/federal authority (e.g., the NHTSA, DOJ, newer court cases, etc.) have any rules, regulations or guidelines that govern local and state law enforcement agencies' operation of sobriety checkpoints?
You are referring to Michigan State Police v. Sitz 496 U.S. 444 (1990). It does not require or suggest a requirement of advance publication of any details regarding the checkpoints. The dissent mentions that "a sobriety checkpoint is usually operated at night at an unannounced location. Surprise is crucial to its method." This point was not countered or even mentioned by the majority. In this case, a state committee had created guidelines setting forth procedures governing checkpoint operations, site selection, and publicity. The mentions this as a background fact, but does not rely on the existence of these guidelines as a requirement for the constitutionality of checkpoint stops. It does contrast checkpoints with "roving patrol stops". Quoting from Martinez-Fuerte 428 U. S. 543 (1976), the majority in Sitz said: "at traffic checkpoints, the motorist can see that other vehicles are being stopped, he can see visible signs of the officers' authority, and he is much less likely to be frightened or annoyed by the intrusion". There are state guidelines, some states have constitutions prohibiting sobriety checkpoints (lots of case law at the state level regarding this), and some state legislatures have made these illegal. In Sitz, the checkpoints were being operated subject to guidelines developed by the Sobriety Checkpoint Advisory Committee (of the State Department of Police). Federally, the NHTSA has guidelines on visibility and publicity towards the goal of effectiveness.
Police officers can lie to you He asked to search your car. He’s allowed to do this. You said no. You’re allowed to do this. He lied to you when he said he would get the K9 to search the car - this would not be legal. But he’s allowed to tell you lies. You made an admission of criminal activity. He now has probable cause to search. He legally searched, confirmed your admission and booked you. Seems legit to me.
Edit: I didn't notice a that this question was tagged for Canada; this answer is based on U.S. law. "Must you stop walking" and "can the police detain you for leaving" are different questions. Must you stop? I'd expect a lot of variation from state to state, but there are definitely situations in which you must stop. In Ohio, for instance, an officer who "reasonably suspects" that that you have committed, are committing, will commit, or have witnessed the commission of violent felony, is permitted to stop you and ask for your name, address and date of birth, and it is a crime to refuse to provide that information. R.C. 2921.29. But at the moment the officer asks you to stop, you're in a tricky position. If you haven't done anything wrong, you'd be inclined to think that the officer has no basis to stop you and that you're justified in walking away. But if someone just called the police and said someone fitting your description just robbed a store two blocks away, the officer has reasonable suspicion that you committed a violent felony, but you have no way of knowing that. This sort of thing happens pretty much all the time. In the absence of that reasonable suspicion, though, Ohio courts have repeatedly held that it is not obstruction for you to just walk away (or even run!) from the officer. Can the police detain you for walking away? Obviously, if you're in a situation where it is a crime to not answer questions, the police can detain you because they just watched you break the law. But what about when you're within your rights not to answer? The police can still detain you with a Terry stop when they have a reasonable and articulable suspicion that you are committing a crime, or that you just did, or that you're about to. And they can continue that Terry stop until that suspicion is confirmed or dispelled, or until they can't reasonably expect to get anymore information by detaining you. Based on the facts you described, it seems unlikely that they could legally detain you based on your termination of the conversation. Still, I imagine that there could be circumstances where they might stop someone, ask questions, and then reasonably suspect that the person was engaged in a crime based on his decision to walk away, especially if the person hasn't explicitly invoked his Fifth Amendment right to silence.
A state's criminal jurisdiction normally applies to acts committed in that state's territory. So if you consume something in state A, you can't be charged in state B for violating state B's prohibition against consuming that thing. However, if state B has a prohibition against public intoxication, and you enter its territory while intoxicated, you could be charged for violating state B's prohibition on public intoxication. The fact that you're crossing state lines also increases the possibility that the federal government would want to get involved; the location of the federal prosecution could be in either state, although neither state's court system would be involved.
We should start with the rule regarding presentation of search warrants. The US Court search and seizure warrant form explicitly says Unless delayed notice is authorized below, you must give a copy of the warrant and a receipt for the property taken to the person from whom, or from whose premises, the property was taken, or leave the copy and receipt at the place where the property was taken. State will have similar rules, e.g. Washington's CrRLJ 2.3. (d) Execution and Return with Inventory. The peace officer taking property under the warrant shall give to the person from whom or from whose premises the property is taken a copy of the warrant and a receipt for the property taken. This does not explicitly say &quot;before starting the search,&quot; and the wording &quot;shall give ... a copy of the warrant and a receipt for the property taken&quot; implies that the two documentary items can be presented at the same time (therefore after the search). Arkansas's rule Ark. R. Crim. P. 13.3 is slightly different (b) Prior to entering a dwelling to execute a search warrant, the executing officer shall make known the officer's presence and authority for entering the dwelling which is not a requirement to present the warrant itself, and then (c) In the course of any search or seizure pursuant to the warrant, the executing officer shall give a copy of the warrant to the person to be searched or the person in apparent control of the premises to be searched. The copy shall be furnished before undertaking the search or seizure unless the officer has reasonable cause to believe that such action would endanger the successful execution of the warrant with all practicable safety, in which case he shall, as soon as is practicable, state his authority and purpose and furnish a copy of the warrant. So there is some variation in the requirement for handing over a copy of the warrant. Body searches might be subject to different standards per jurisdiction. Washington search law has extensive limits on strip and body cavity searches, whereas searching pockets is like searching a premise (a copy of the warrant must be eventually presented, along with an inventory of items seized). It is typically stated that ideally, police will show a copy of the warrant to the person being searched or whose premise is being searched, but ideally does not mean &quot;must always&quot;. I have not found any case where an officer reasonably could have shown the warrant prior to conducting a search (when so requested by the searchee) but unreasonably refused.
In general, you do not have civil recourse against the government for (lawful) legal process that you are the victim of. "Counterclaim" would only be applicable when A sues B, and B makes a counterclaim against A – the police don't sue you, they arrest you, and the prosecutor prosecutes you (or decides not to). If the police beat you up, you could sue them for violating your rights, under what is known as Section 1983. Given the scenario you describe, this comes closest to involving false arrest, meaning that there was no probable cause for arrest. Otherwise, the police have immunity for their actions. But if there is a legal arrest warrant, there is probable cause (existence of probable cause is the standard for issuing an arrest warrant), so no claim against the police will succeed. I am leaving out the anomalous concept of an unlawful arrest warrant, where a judge issued an arrest warrant but there is in fact no probable cause. Such a case would be covered by Section 1983, where either the judge or the swearing officer (or both) violated your rights.
In the U.S. there is no law that requires you to ever say a word to a law enforcement officer, and lawyers generally encourage you to minimize what you communicate to them anyway. I can't think of any situation where a request for information could not be demanded in writing. As a practical matter, in some situations you will probably be subject to some extra scrutiny and inconvenience: E.g., in a stop-and-identify situation, you could hand the officer a note saying, "Please make any requests for information from me in writing." The officer may infer that you have some disability, but if he does not (or discovers you don't) he may get irritated enough to subject you to harassment for "contempt of cop". Of course, if you can understand him, you are still required to obey an officer's lawful orders no matter how they are communicated. But "speak" is not a lawful order.
I see lots of possible issues here, including: Will the Apprendi decision be given retroactive effect? Were the constitutional issues raised at the time of trial, and if not will a court permit them to be raised later? Will a court agree with the law review publication? Will the facts in your case be sufficiently similar to the cited case? Beyond those, in a section 1983 suit many public employees have qualified immunity unless the legal point was already "well established" when the violation occurred. To pursue this you will need to work with a lawyer skilled in this area. No one on this forum can possibly given you a reliable answer as to whether you have a reasonable case.