“Do we really want a beat cop second guessing actual warrants? I would think that the better response would be to go after those that issued the warrant in the first place.”
The problem is that, officers might have been killed in exeucting the warrant, which is too far after the probable cause hearing. Somehow, there should be a period of time to, like you say, attack the warrant, before sending officers into harms way. Perhaps, increasing the penalty for an unlawful warrant, which may cause the issuer to take a HARD second look.
It is my understanding that search warrants are issued by judges AFTER a probable cause hearing. That would put two people on the hook. The requester of the warrant to provide statements regarding the evidence (which should be sworn statements under penalty of perjury). Which then get reviewed by a Judge for validity and potential criminal activity.
If there is a lie by the requester of the warrant, they should be charged with perjury.
If a judge, relying on the facts presented by the requester, grants a warrant without actual probable cause or actual criminal activity (not just suspicion), then the Judge needs to be removed from office.
just my .02