Assume you are a U.S. Senator. The Senate has been asked for its "advice and consent" to a treaty negotiated by the Executive Branch. The treaty would require every nation of the world to reduce its carbon emissions by 20% by the year 2035. Exactly how this is to be done is left for each nation to decide. You have to vote, yes or no, on the treaty. How do you decide? What factors or sources do you consider, and why? Assume you have to vote yes or no. You cannot abstain or suggest amendments to the treaty. You should further assume that all nations are voting at the same time, so you cannot base your decision on what other countries choose to do.