White House. Executive order on tackling the climate crisis at home and abroad [EB/OL]. 2021 [2021-02-10]. https://www.whitehouse.gov/briefing-room/presidential-actions/2021/01/27/executive-order-on-tackling-the-climate-crisis-at-home-and-abroad/
[2]
World Resources Institute. CAIT Greenhouse gas emissions and emissions targets [DB/OL]. 2021 [2021-02-10]. https://www.climatewatchdata.org/countries/USA#ndc-content-overview
[3]
United States. Reducing greenhouse gases in the United States: a 2030 emissions target [EB/OL]. 2021 [2021-05-08]. https://www4.unfccc.int/sites/ndcstaging/PublishedDocuments/United%20States%20of%20America%20First/United%20States%20NDC%20April%2021%202021%20Final. pdf
[4]
Joe Biden. The Biden plan for a clean energy revolution and environmental justice [EB/OL]. 2021 [2021-02-10]. https://joebiden.com/climate-plan/