I heard Mark Levin weight in about the missing severibility clause (which is often added in conference) and he said that we could not count on it. He said that appeals courts often picked one part of a bill and declared it invalid and left the rest of the bill intact.
He said don’t count on a moderate flaw declared unconstituional to bring the whole thing down unless it was so integral to funding or application that its abscence made the bill impossible to apply.
see my comment at #250