Whereas the October 2018 report entitled Special Report on Global Warming of 1.5 ºC by the Intergovernmental Panel on Climate Change and the November 2018 Fourth National Climate Assessment report found that— (1) human activity is the dominant cause of observed climate change over the past century; (2) a changing climate is causing sea levels to rise and an increase in wildfires, severe storms, droughts, and other extreme weather events that threaten human life, healthy communities, and critical infrastructure; (3) global warming at or greater than 2 degrees Celsius beyond preindustrialized levels will cause— (A) mass migration from the regions most affected by climate change; (B) more than $500,000,000,000 in lost annual economic output in the United States by the year 2100; (C) wildfires that, by 2050, will annually burn at least twice as much forest area in the western United States than was typically burned by wildfires in the years preceding 2019; (D) a loss of more than 99 percent of all coral reefs on Earth; (E) more than 350,000,000 more people to be exposed globally to deadly heat stress by 2050; and (F) a risk of damage to $1,000,000,000,000 of public infrastructure and coastal real estate in the United States; and (4) global temperatures must be kept less than 1.5 degrees Celsius above preindustrialized levels to avoid the most severe impacts of a changing climate, which will require— (A) global reductions in greenhouse gas emissions from human sources of 40 to 60 percent from 2010 levels by 2030; and (B) net-zero global emissions by 2050; Whereas, because the United States has historically been responsible for a disproportionate amount of greenhouse gas emissions, having emitted 20 percent of global greenhouse gas emissions through 2014, and has a high technological capacity, the United States must take a leading role in reducing emissions through economic transformation