Hey Dee, there are many companies in US, who has business in Europe (kind of like sale and branches) forced to be a green companies. Even that US didn't sign Kyoto protocol.So it is not like all US corporations are doing bad things for environment. These kind of companies have whole department of workers (from 2 to 100 people) who is watching the company to follow green technology line. And all employee has been informed that the company following the green line development and production.
Actual production of these US companies meet any green World Standards. Otherwise they can't make their business outside of US.
That is just to assure you that there are millions people here in US do very responsible jobs and follow every letter of the law to make sure they do not damage an environment.