回复：建意用中共的方法，开辟劳改犯农场和工厂，让罪犯自吃其力。

That way would need more manpower to monitor inmates. In US, state will pay about $73000 to hire a correction officer. Each officer normally watches about 100 inmates. A officer is not able to watch every move each inmate does. If put inmate to work, you have to give them some tools. Those tools cabn become weapons. They can use tools to cut fence, to attack a officer. That will requre more officers to watch inmates working. It is not like in china. China prion guards are soliders. Goverment pays food and provides house, plus a little bit money. You can ues a squad team to watch a few inmates working