Steven Aftergood writes:
When law enforcement agencies use a Global Positioning System device to track the motor vehicle of a potential suspect, is that a “search” that is subject to constitutional protections under the Fourth Amendment? Or is it comparable to visual inspection of public information that enjoys no such protection?
The Supreme Court has not ruled on the subject, and lower courts have issued a range of opinions in different cases, according to a new report (pdf) from the Congressional Research Service that carefully delineated the issues.
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