Former New York Mayor and billionaire Michael Bloomberg, left, speaks with Fiji prime minister and COP president Frank Bainimarama in the U.S. Climate Action Center at the COP 23 Fiji UN Climate Change Conference in Bonn, Germany, Saturday, Nov. 11, 2017. Bloomberg's "America's Pledge" campaign works to compile and tally the climate actions of states, cities, colleges, businesses, and other local actors across the entire U.S. economy. (AP Photo/Martin Meissner)