...Also, the Supreme Court can declare an executive order unconstitutional.
Also from the article...
Presidential proclamations carry the same force of law as executive orders — the difference between the two is that executive orders are aimed at those inside government while proclamations are aimed at those outside government. … Its duty is to enforce the laws.
Do Executive Orders Have The Force Of Law?
https://www.timesmojo.com/do-executive-orders-have-the-force-of-law/#:~:text=An%20executive%20order%20is%20declaration%20by%20the%20president,Is%20it%20illegal%20to%20disobey%20an%20executive%20order%3F
What if the EO conflicts with the Constitution?
From article linked above...
Also from the article...