Antonin Scalia,
Ferguson v. City of Charleston…
(2001)
“ There is only one act that could conceivably be regarded as a search of petitioners in the present case: the taking of the urine sample. I suppose the testing of that urine for traces of unlawful drugs could be considered a search of sorts, but the Fourth Amendment protects only against searches of citizens' "persons, houses, papers, and effects"; and it is entirely unrealistic to regard urine as one of the "effects" (i.e., part of the property) of the person who has passed and abandoned it. ”
