EOs are subject to judicial review. Whether it's a law or an EO someone typically needs standing to challenge it. Although, you can even have Congress create a resolution allowing that. Frankly, there's nothing wrong with the wording of the current EO. What is more likely to be challenged are any rules that come from that EO that run counter to the law.

"But it still wouldn't invalidate the EO." Truman and the steel mills would disgree.