Pretty sure..
I remember reading about this some time ago, and I will have to see if I can find the source again..
The premise was that most executive orders go through (become "law" ) only because no senator bothers to challenge the president's authority to put it into effect..
But sometimes, Senators DO object to an executive order, and when that happens, it does NOT automatically become law..
So, when I say just a few senators, I mean that it takes more than just one, but not a 2/3 majority of the senate to make an objection to a proposed executive order..
IIRC, there is also a time factor..
The Senate is required to make their objections within a specific time frame as well..
Failure to do so means the executive order becomes law, "without comment" from the senate..
I will attempt to research and validate my claims..
This executive order is part of the 1978 law that allowed under extroadinary circumstances the president to use this power.
The key is what extroadinary means. Wouldn't congress need to pass a new law in order to overturn it since bush has the authority under existing law?