hand. >> the u.s. pulling back is going to be very difficult in terms of the stability of these systems. >> reporter: if trump sticks to his plans, it would be an about face from the previous administration's aggressive climate change agenda. >> we're going to contribute $3 billion to the green climate fund so we can help developing nations deal with climate change. >> reporter: president trump's proposed budget eliminates contributions to the green climate fund. it would also cut more than $10 billion from u.s. aid and the state department, two of the world's leaders in climate work. >> we're going to cancel the paris climate agreement. >> reporter: many trump supporters, including those in his cabinet, applaud these proposal proposals as a way to prioritize america's interests. but money isn't the only concern. >> as water gets more scarce, it threatens to become a catalyst for conflict. >> reporter: a 2016 study found