Federal agencies have shown a shocking eagerness to use administrative subpoenas -- search warrants that do not require a judge's approval. These subpoenas subvert the Fourth Amendment. According to this item from the Electronic Frontier Foundation, the tide may be turning, just a bit, against government snoops:
Another portion of the Bill of Rights that has been under government assault for many, many, years is the Fifth Amendment. We generally understand that the Fifth Amendment protects our rights in court proceedings. But it also protects our property from government. Or rather it's supposed to protect our property from government.