I also think this is an interesting contrast with the decision to overrule Chevron from just a few days ago. There it was decided that executive agencies have no authority to interpret unclear statutes, under the constitution this was kind of a power grab from the executive to the courts. The conservative movement general sees government agencies deriving all their powers from the president, so it's a bit funny that they would decide this first case to give agencies no wiggle room in their interpretation of the law and this next one to give the president maximum wiggle room. It kind of makes you wonder