Court Rules Warrantless GPS Tracking Legal for Law Officers

"...it seems that a well-placed hunch is all they [police] need for lawful placement [of a GPS tracking bug]. Interestingly, the government argues that no warrant was needed since 'there was no search or seizure within the meaning of the Fourth Amendment,? but did add that ?wholesale surveillance of the entire population? was to be viewed differently." While not a legal scholar myself, that strikes me as distinction without a difference.