The Climate Action Now Act was introduced in the House on March 27 as bill number H.R. 9, by Rep. Kathy Castor (D-FL14). H.R. 9 is legislation that directs the president to develop a plan for the United States to meet its nationally determined contribution under the Paris Agreement. It requires the U.S to remain in the Paris Agreement beyond 2020 by preventing the administration from using any federal dollars to withdraw from the agreement.
In September 2016, during his closing months as president, Obama formally entered the Paris agreement. With that he also committed the United States to reducing its emissions by 26% below its 2005 levels by 2025. The Paris Agreement is an agreement within the United Nations Framework Convention on Climate Change (UNFCCC) that deals with the greenhouse gas emissions mitigation, adaptation and finance signed in 2016. Read more at JHSPG