https://commons.wikimedia.org/wiki/Barack_Obama

https://rationalwiki.org/wiki/Barack_Obama

https://en.wikiquote.org/wiki/Barack_Obama

https://www.wikidata.org/wiki/Q76

https://www.washingtontimes.com/news/2019/dec/9/obama-administrations-abuse-of-power-literally-wor/

https://www.cato.org/publications/commentary/top-10-ways-obama-violated-constitution-during-presidency