Wired reports:

The Obama administration has urged a federal appeals court to allow the government, without a court warrant, to affix GPS devices on suspects’ vehicles to track their every move.

The argument is that Americans should expect no privacy while in public, and so officers should be able to shoot darts with GPS tracking on to vehicles to track them. As despicable as I find the idea that you’ve no right to privacy when in public, what happens when the targeted, CLEARLY EVIL CRIM, who is presumed guilty from the off, returns home, where there is still an expectation of privacy (until the administration figures out how to do away with that trifling annoyance)? Presumably, the US government has developed magic darts, which drop off a vehicle when it returns to private property! Yes, that must be it!