mckesson, the nation's largest drug distributor, is at the top of that list. the d.e.a., along with six states, sued mckesson in 2008 for supplying hundreds of suspicious hydrocodone orders to rogue pharmacies. mckesson settled, paying more than $13 million in fines and agreeing to closely monitor their pill supply. >> even after we charged them civilly and took civil fines after them, even after they had memorandums of understanding that they knew what to do now, three years later, they started violating the law again. >> reporter: this time, the wholesaler paid $150 million in fines and had distribution centers suspend operations in four states. in your view, does the pursuit of profits outweigh compliance with the law? >> yes. a civil penalty of a few million dollars or tens of millions of dollars means nothing when you're making, you know, essentially billions of dollars. >> reporter: now, in a potentially precedent-setting suit, west virginia is suing mckesson. records reveal in a five-year period, the wholesaler delivered nearly 100 million opiates to a