That’s just an Executive Order. Executive Orders are instructions to the executive branch, not the country itself (obviously, the president doesn’t have that ability). Congress hasn’t passed a law establishing an official language in the US.

I dont think an EO can do that, so at most just executive agencies. Meaning the 2 other branches can ignore it.

I don't believe Trump's wacko EOs are binding law. Like, the Gulf of Mexico is still the Gulf of Mexico. The DoD is still the DoD.

No reason to give the fascist LARPers the respect. Just don't give the poor clerk forced to regurgitate the junk a hard time.

or DACA?

Honestly, Executive Orders in general are dysfunctional cludge. I feel less bad about things like DACA, since that's trying to fix something broken instead of wrecking things for no useful reason (or acting to puff up a sick ego) ... but hell no, that should have been a proper law.