A potential client asked me whether he could be prosecuted in California because he used to sell cocaine and marijuana. He said he wasn't involved in heavy trafficking of any sort, but was just a local street dealer trying to make some extra cash. He said it has been about 3 months since he last sold any drugs and he no longer sells or is involved with it. If arrested for any reason could he face possible charges from past sales of drugs? Is there a statue of limitations regarding how far back charges can be given for selling drugs, if at all?