they dont care about the MJ it's the money they are after....when you sell black market pot it cuts into the profits that come from legal, taxed distribution.  and when the goods are going over the state lines it can cause a problem for the legislation moving forward... this is a problem and you have to treat it just like the "hard stuff" it creates an economic and political problem that will ultimately cause problems for the end of prohibition... somehow in some weird way these laws are working for the advancement of mmj decriminalization.