Retrieved December 17, 2010.

^ Kuhnhenn, Jim (December 4, 2013). "Obama: Income Inequality a Defining Challenge". Associated Press. Retrieved January 9, 2014.

^ "President Obama uses his final months to bring congressional approval of a 12-nation free trade pact called the Trans-Pacific Partnership". CBS News. September 5, 2016. Retrieved September 5, 2016.

^ "Obama Halts Drilling Projects, Defends Actions". NPR. May 27, 2010.

^ Jonsson, Patrik (May 29, 2010). "Gulf oil spill: Obama's big political test". The Christian Science Monitor. Archived from the original on June 1, 2010. Retrieved June 6, 2010.

^ Neuman, Scott (March 31, 2010). "Obama Ends Ban On East Coast Offshore Drilling". NPR. Retrieved October 30, 2021.

^ Goldenberg, Suzanne (July 28, 2013). "Barack Obama expresses reservations about Keystone XL pipeline project". The Guardian. London.

^ Stein, Sam (June 25, 2013). "Obama: Keystone XL Should Not Be Approved If It Will Increase Greenhouse Gas Emissions". The Huffington Post.

^ Calamur, Krishnadev (February 24, 2015). "Obama Vetoes Keystone XL Pipeline Bill". NPR. Retrieved February 24, 2015.

^ Barron-Lopez, Laura (March 4, 2015). "Keystone veto override fails". The Hill. Capitol Hill Publishing. Retrieved July 2, 2015.

^ "Obama bans oil drilling 'permanently' in millions of acres of ocean". 