Are you driving or traveling some other way? If your driving just wrap it up good. dont dress like a dirty hippy (take a shower and shave) drive the speed limit dont smoke in the car all that kind of stupid shit that gets people arrested and you should be fine. oh yea, dont speed. If you are on the highways you should be fine they arent gonna have dogs on major roads sniffing for weed.
IF you see a roadsign that says "drug checkpoint ahead" DO NOT GET OFF THE HIGHWAY AT THE NEXT EXIT!!!!! the cops are waiting for people with stuff to hide gettting off the next exit and they will stop you there...its a trap!! (my best ackbar impersonation)