US President Donald Trump’s decided to scrap his predecessor’s climate policies and promote the use of fossil fuels The “Fulfilling America’s Pledge” report kicks off the three-day Global Climate Action Summit SAN FRANCISCO: The United States will fall short by a third on its commitment under the Paris climate treaty to reduce greenhouse gas emissions, according to a report released Wednesday in San Francisco. A crescendo of efforts at the sub-national level by states, cities and business to shrink the country’s carbon footprint will not fully compensate for President Donald Trump’s decision to scrap his predecessor’s climate policies and promote the use of fossil fuels, it found. Financed by former New York mayor Michael Bloomberg, the “Fulfilling America’s Pledge” report kicks off the three-day Global Climate Action Summit, a gathering of several thousand governors, mayors, business leaders and climate activists from around the world.