[Lurking Libertarian]

That CA judiciary also overstepped its bounds if it wanted to interpret the US Constitution. That is a job for federal courts

State courts decide federal constitutional issues a thousand times a day, which is why the Constitution specifically provides that state court judges are bound by it (Art. VI, cl. 2).

[butterdezillion]

So if a CO state court decides something about their state law, it means that NE has to decide the same thing about their state law?