Sources sited

-https://www.law.cornell.edu/supct/html/07-290.ZS.html

-https://en.wikipedia.org/wiki/District_of_Columbia_v._Heller

-https://www.oyez.org/cases/2007/07-290

-http://smartgunlaws.org/gun-laws/the-second-amendment/the-supreme-court-the-second-amendment/dc-vs-heller/