O.K. I take it as a given that we must do something the question is What?
If it says "made in X" don't buy it?
Pollution Tax? .... I bet Gordon will like that one ;oP
Embargo ........ Never seen that one be effective
Political persuasion ...... ROTFLMAO
Offer "incentives" to "go green"?

Don't forget I only named China as an example ..... there are many "china's" out there