They don’t want to kick out a federal agency. They just want to cut off its water supply. McCulloch v. Maryland doesn’t apply.
Utah just needs the water for something else. Irrigation maybe. They have a good case and can win in court.
Sure, ok, I'm sure that will be persuasive in a federal court of law. Because Utah just randomly shuts off water to other facilities all the time. This is too cute by half, and is precisely the situation the court addressed nearly 200 years ago in McCulloch. There Maryland was simply trying to "tax out of state banks" - but as in this case, the actual motive was easy to figure out.
I would bet. Utah doesn’t have all that much water as a state, last time I heard.