Probable cause requires facts and circumstances within an officer's knowledge establishing a fair probability that contraband or evidence of a crime will be found in the particular place to be searched. Florida v. Harris, 568 U.S. 1050, 1055 (2013); Brinegar v. United States, 338 U.S. 160, 175-76, (1949); Carroll v. United States, 267 U.S. 132, 162 (1925).

In states where recreational marijuana is legal in personal use amounts, does vehicle to look for a personal use amount?

Does the Fourth Amendment prohibit local state law enforcement from searching a vehicle to look for a personal use amount of marijuana in states where recreational marijuana is legal?