I happen to live in the US, so maybe you can enlighten me. What federal regulations about CO2 emissions here are you talking about? As far as I am aware, factories can emit as much carbon as they wish.
> The Clean Air Act sets national air quality standards to lower pollutants that cause smog, acid rain and other health dangers. It's never been used for greenhouse gases, but environmental groups now hope EPA might finally use it after ignoring the option for 11 years.