Doesn’t that mean that all the rules and decisions they have made since their appointment are void?
I’m no lawyer, but since they vacated the Board’s ruling in this case, it certainly seems that way.
It does, but I don't know (for sure) what steps or how other parties will obtain relief. I assume they have to sue for a judgment, just like Canning did.
Also of interest, there are many Article III judges whose appointments are unconstitutional, too. It's a fairly big can of worms.