The Inverterbrate Party
As I understand it, this is a matter of getting FISA courts to give retroactive warrants for these wiretaps. These same warrants only need to be within 72 hours, and be justified to a secret court judge. Either this law is intended to protect the lazy work habits of the Republicans, or these wiretaps are not even justifiable to a FISA court anymore.
These warrants would give the telecomms protection, but it is possible that some of the wiretaps that they've already given were illegal. If the Democrats bail on this, I'm beginning to wonder if they should be renamed the Invertebrate Party.