
No search warrant required:
“Stop and frisk” on probable cause
Search incident to a lawful arrest
(and, by the way, same 12-day high stats here, thanks!)

Border searches
Consensual searches
Checkpoints as regulated (flashlight only, etc.)
“Plain view” doctrine (seizure, contraband)
(both photos by Myra Lambino-Ramos, Los Angeles Natural Heritage Museum)
(hey, the stats for the post below, flawed pose, are a 12-day high. Thanks thank thanks!)