The Supreme Court has created a good-faith exception to the exclusionary rule where police rely on a search warrant that is later held to be invalid because the magistrate erred in finding probable cause for a search. Should the good-faith exception be extended to cases where police acting in good faith conduct warrantless searches that are later held to be unlawful?

What alternatives to the exclusionary rule might be adopted to enforce the protections of the Fourth Amendment? How effective are such alternatives likely to be?