Thats because D.C. is purely a federal district and does not follow under any state laws or provisions.

They may as well put the US Constitution in the President's bathroom to wipe his ass with.
Great Spirit Reviewed by Great Spirit on . D.C., the 51st Police State wow, you'd think d.c. would be the place you'd follow the constitution the most...curfews and no gun rights...sounds like a dream. punish everyone for the actions of a few...FREEDOM! D.C., the 51st Police State A shocking story of today's high school hoodlums, running wild in the nation's capital! Macy Hanson / Reason Online | August 8 2006 We have nothing to fear but fear itself. Well, that and anyone under the age of 17. So follows the logic of the Washington, D.C., City Rating: 5