Australian consumer watchdogs are starting to scrutinize green marketing claims, specifically claims regarding carbon offsets.  Similar issues arose in the U.S as the term organic was being popularized, forcing the USDA to step in and establish the National Organic Program. 

Full Story:  Australia Investigating Green Marketing Claims

Green can mean many things, so I think its unlikely we see a National Green Program, but it will be interesting to see how similar consumer protection issues play out in the U.S.