Well, it looks like the Supreme Court still recognizes the Fourth Ammendment - they just ruled the use of drug sniffing dogs, prior to the issuance of a warrant, to be unconstitutional. In other words, police can no longer use a dog to sniff around without first getting a warrant, as a means of creating probable cause to get a warrant - they now must have probable cause, and a warrant, to deploy the dog.
I wonder what this will mean for motorists. Most courts have seen the sanctity of one's car to be pretty darn near equal to that of one's home. It's not to be searched without a warrant, which cannot be obtained without probable cause. Seems to me that if police can no longer use dogs without a warrant at one's home, they probably cannot do so with one's car, either. No more holding motorists at the side of the road, awaiting the arrival of the dog, if they need a warrant to deploy the dog in the first place.
I see this as a significant victory for our liberty over the continued over reach of the police state. Score one for the good guys.
Supreme Court: Drug dog sniff is unconstitutional search | Politics | The Seattle Times