A policy applied to federal agencies on the whims of the executive/administration (president+staff). (FBI, CIA, DHS, ICE, TSA, HHS, FDA, so forth…)
Does not impact state law, judicials, or enforcement agencies. Though many of these do take their lead from federal guidelines to some degree, especially at the police and sheriff level.
This will be sued over constitutionality in the courts
Stacked courts will probably claim it’s constitutional
Up to Congress to specifically and independently say it’s unconstitutional. This Congress will probably not do that
IF there’s another election, and the term limit is still adhered to, the next administration may chose to revoke it or alter it assuming they have differing policies.
Rinse and repeat.
[Edits: clarification and structure]
They are applied with effect based on how they’re written. They are “Official” but they can’t change the writing of the constitution. Another administration can immediately revoke them as he has with many of biden’s. The courts can only change how the constitution is interpreted. Congress needs to pass an amendment to change the constitution.