More money for the U.S to spend!

Link to the article http://www.msnbc.msn.com/id/21989183/
There was a report published by the United Nations Development Programme which stated the effects of global warming poorer countries around the world. Of course it stated all the dire consequences that emitting carbon dioxide has and how the poor women and children are going to be the most. This article is a summary of the report and it caught my attention because in the second paragraph it states that the U.S needs to cover $40 billion of the annual $86 billion needed to protect the poor in other countries. This report which I skimmed through says that the two major contributors of carbon dioxide emissions (the U.S and China) are responsible for the money needed to “strengthen the capacity of vulnerable people”.
So if I got this right this report commissioned by the UN wants the U.S government, the U.S citizens to pay for the damages that global warming causes to other countries. This payment is not too far off in the future ether. By 2012 it is estimated that the full $86 billion in “climate proofing” will be needed annually. This money will mostly be spent on flood and drought relief in poor countries around the world. Seems to me to be a little bit of a stupid idea to spend $86 billion every year on clean up rather than spend it on prevention of the “mess maker”. Hopefully after spending $86 billion for possibly a few years the “mess maker” could be contained and no more money need be spent instead of spending that money indefinitely. That is if humans have a significant impact on the “mess maker” global warming.
The 400 page report says a lot of nothing I think. If the UN embraces it though, nothing will still be done. The problem of putting in place some law to make the U.S pay the money is that there is no one to enforce it. The UN had no army or power to make other countries enforce it. The idea that this report has is a waste of time and caused more damage to the environment in the printing of its 400 pages than environmental protecting it would have caused if it was followed.