I would look up the laws of each particular state. Then I would google federal laws. you should find the answer there. The main gist of my answer is that every state will be different. heck, each city will be different.. if you cant find the answer, I would post "whats the personal amount law in X state" that way someone with direct knowledge may be able to answer. I know that in some cities you can have up to an 1/8th of weed and all you will get is a 100 dollar ticket. Others, its a felony...Location, location, location..