141421P.pdf   11/26/2014  United States  v.  Adam Chartier
   U.S. Court of Appeals Case No:  14-1421
   U.S. District Court for the Northern District of Iowa - Cedar Rapids   
   [PUBLISHED] [Wollman, Author, with Riley, Chief Judge, and Bye, Circuit 
   Judge] 
   Criminal case - Criminal law. The police had an articulable and 
   objectively reasonable suspicion that a motorist without a valid license 
   was operating a vehicle, and the officer's decision to make a traffic stop 
   did not violate the Fourth Amendment; the officer had the necessary 
   suspicion to expand the scope and range of the stop once he saw muriatic 
   acid and tubing in the car, and the use of a drug dog was permissible; the 
   officer's knowledge of defendant's history and the facts of the stop 
   justified a pat-down search for purposes of officer safety; fact that the 
   officer could not find drugs in the car after the dog alerted justified a 
   search of defendant's person since those facts made it more likely that 
   any drugs that had been in the car were on defendant's person.