[1] "Mr. President: Stop the Paris Climate Treaty | Competitive Enterprise Institute" https://cei.org/stopparisclimatetreaty.

[2] "Once the GOP rolls out climate policies, it endorses all the assumptions of the left" 6 May. 2019, https://www.aei.org/articles/once-the-gop-rolls-out-climate-policies-it-endorses-all-the-assumptions-of-the-left/.

[3] "The Grover Norquist Show: The Real Science and Politics Behind Global Warming" https://www.atr.org/grover-norquist-show-real-science-and-politics-behind-global-warming.

[4] "Keystone Haters Kill Jobs | Heritage Action For America." https://heritageaction.com/blog/keystone-haters-kill-jobs.

[5] "ACU Chairman Matt Schlapp's Testimony about the Clean Power Plan - ACU." https://conservative.org/article/acu-chairman-matt-schlapps-epa-testimony.

[6] "Global Warming | Cato Institute." https://www.cato.org/research/global-warming.

[7] "Covert Operations - The New Yorker." 30 Aug. 2010, https://www.newyorker.com/magazine/2010/08/30/covert-operations.

[8] "National Ambient Air Quality Standard for Ozone - Mercatus Center" 12 Mar. 1997, https://mercatus.org/uploadedFiles/Mercatus/Publications/20060830_MR_RSP_PIC_EPA_NAAQS_Dudley_March_12_1997.pdf.

[9] "Special Report: Burgeoning Conservative Think Tanks" 12 Jul. 1991, https://desmogblog.com/sites/beta.desmogblog.com/files/Special%20Report%20-%20Burgeoning%20Conservative%20Think%20Tanks.pdf.

[10] "Publications - The Global Warming Crisis Is Over | Heartland Institute" 19 May. 2015, https://www.heartland.org/publications-resources/publications/the-global-warming-crisis-is-over.

[11] "Action Plan for President Trump | Heartland Institute." https://www.heartland.org/topics/government-politics/trump-action-plan/index.html.