private sector in this country, you figure out of a workforce of 200 million people or 180 million people, that's not huge. >> but the truth is most prisoners aren't working for private companies, they work for the government. cheap labor keeps the prison system running. >> what are they doing? >> they're doing primarily what prisoners do, they run the prisons. so anything that prisoners -- anything that has to get done in a prison, unless it's security related, usually prisoners are doing it. they're doing plumbing, they're doing maintenance, they're doing custodial and janitorial services, cleaning and cooking food, anything that is needed prisoners do. the prisons save a fortune by making the prisoners run the prison? >> millions, tens of millions.