Thirty cities, three states, more than 80 university presidents, and more than 100 companies are part of a growing group intending to uphold the Paris Agreement, the climate-change accord that President Donald Trump on Thursday announced the US would be exiting. The group, called the United States Climate Alliance, is being organized by the billionaire philanthropist Michael Bloomberg. The coalition plans to submit a plan to the United Nations that commits to greenhouse-gas limits set in the Paris Agreement, according to The New York Times. It is negotiating with the UN to form its own National Determined Contribution — a...