Here's some good news I just found:

"Bloomberg founder and CEO Michael Bloomberg has offered to make up the $15 million in funding that the United Nations stands to lose from U.S. President Donald Trump's decision to pull out of the Paris Climate Agreement."

"Bloomberg believes that "non-state actors" will be able to achieve the United States' 2025 emissions reduction target without the federal government's support."

http://fortune.com/2017/06/02/bloomberg-trump-paris-agreement-funding-un/