I think a lot of people that are freaking out are missing that this applies to the executive branch, over whom the President has already perfectly well established. Literally the first statement of article 2 of the US Constitution (which lays out the power/rules for the executive branch) is "The executive Power shall be vested in a President of the United States of America."
The main point of this executive order is likely part of the ongoing issues related to the chevron deference. [1] Chevron deference [1] was a (IMO very weird) legal standard that was overturned in 2024. It required the judicial to completely defer to the executive branch in cases where the laws around executive departments (generally relating to the the limits of their regulatory power/authority) were ambiguous. When this was overturned, the judiciary regained their independence and were once again able to hear and independently judge cases around these executive departments.
This order is now stating that the executive branch departments themselves will no longer be independently interpreting the law at all, but instead defer to the legal opinions of the head of the executive. The order itself also makes it clear that it does not allow rejecting or unreasonably redefining the laws applying to the various departments - instead the main issue is where potential ambiguities and related limits/allowances will be determined. And of course those determinations could then be challenged by either the judiciary or the legislative (by passing overriding laws).
The short version of this is "Executive departments will now be directly accountable to all three branches of government - executive, legislative, and judicial."
We’re not “missing” anything, your interpretation of the Constitution is incorrect. You may want to scroll up and read Article I, which constrains Article II (that’s why it comes first).
Your understanding of Chevron deference is also incorrect, for what it’s worth.
> this applies to the executive branch
So he gets to tell police what the law is and who to arrest within the "law" that he proclaimed.
> It required the judicial to completely defer to the executive branch in cases where the laws around executive departments (generally relating to the the limits of their regulatory power/authority) were ambiguous.
Why doesn’t congress do its job and write laws that do things?
You're misunderstanding the EO. It has nothing to do with the Chevron deference (and you are also misunderstanding the impact of the Chevron deference)
No - it’s a statement that the executive branch will (as a matter of policy) ignore Judicial and Congressional oversight. Unless it wants it, anyway.
This is just a statement of the unitary executive theory. Unitary executive theory is controversial, and the controversy there did not (until, oh about last month) align with party lines.