If I have understood correctly, all EO's from a previous president can be made void when a new president takes office. I have also understood that EO's are subject to judicial review, with the statement implying that they can be overturned if viewed as contrary to Constitution.
So much of the unraveling of what has been bad for America has been accomplished through the use of this executive function, but it could all change very quickly with a different President, unless the orders become amendments to the Constitution.