Can you really sign an executive order to circumvent a law passed by Congress?
Yes, Congress can pass a law overriding his order. He can veto that, and they can use a 2/3 vote to override THAT.
But yes, he can do it.
NO
“Can you really sign an executive order to circumvent a law passed by Congress?”
It still has to be enforced by other agencies. He does have some bit of control over how it is enforced through EO.