http://www.newscientist.com/news/news.jsp?id=ns99992744
According to this article in newscientist.com the earth summit is nothing more than a talking shop, with the EU pointing it's finger at the US and the US not really caring.
Funny that Germany, the biggest and most dominant country in the EU has had one of the worst records on environmental pollution when it comes to heavy industry polluting rivers.
http://www.cleanganga.com/articles/mar3.php
Clearly though the current American administration is quite bullish in it's environmental scepticism, which is a little surprising since it was George Bush's father George Bush Senior who participated in the original Earth summit.
http://www.nrdc.org/media/pressreleases/020830.asp
Of course the main obstacle to binding international agreements on environmental protection is big business, not the USA itself as a nation. Simply put, companies will not volunteer to spend money to clean up their industrial activities without some sort of impetus, as is demonstrated by the cleanup of the Rhine in Germany, big industry will only clean up it's industrial activities under duress, coercion or threat of the same via impending legislation.
Perhaps what is really needed is an environmental disaster like the wrecking of the
Exxon Valez to act as a refresher for the public before big government will get up off of it's procrastinating rear end and act to protect the environment.
Victory is life