In this article, the following think tanks are considered: Libertarian https://en.wikipedia.org/wiki/Foundation_for_Economic_Education https://en.wikipedia.org/wiki/Reason_Foundation https://en.wikipedia.org/wiki/Cato_Institute https://en.wikipedia.org/wiki/Ludwig_von_Mises_Institute https://en.wikipedia.org/wiki/Ayn_Rand_Institute https://en.wikipedia.org/wiki/Campaign_for_Liberty Conservative https://en.wikipedia.org/wiki/The_Heritage_Foundation https://en.wikipedia.org/wiki/American_Enterprise_Institute Progressive https://en.wikipedia.org/wiki/People_for_the_American_Way https://en.wikipedia.org/wiki/Center_on_Budget_and_Policy_Priorities https://en.wikipedia.org/wiki/Progressive_Policy_Institute https://en.wikipedia.org/wiki/Open_Society_Foundations https://en.wikipedia.org/wiki/Center_for_Economic_and_Policy_Research https://en.wikipedia.org/wiki/Campaign_for_America's_Future https://en.wikipedia.org/wiki/Center_for_American_Progress...