On how (modern) empires dis-integrate after their obligatory decade in Afghanistan, Wikipedia says this about the USSR

In the late 1980s, the constituent republics of the Soviet Union started legal moves towards or even declaration of sovereignty over their territories, citing Article 72 of the USSR Constitution, which stated that any constituent republic was free to secede.^[10] On April 7, 1990 a law was passed, that a republic could secede, if more than two thirds of that republic's residents vote for it on a referendum.^[11] Many held their first free elections in the Soviet era for their own national legislatures in 1990. Many of these legislatures proceeded to produce legislation contradicting the Union laws in what was known as "The war of laws." In 1989, the Russian SFSR, which was then the largest constituent republic (with about half of the population) convened a newly elected Congress of People's Deputies. Boris Yeltsin was elected the chairman of the Congress. On June 12, 1990, the Congress declared Russia's sovereignty over its territory and proceeded to pass laws that attempted to supersede some of the USSR's laws. The period of legal uncertainty continued throughout 1991 as constituent republics slowly became de facto independent.

So, visualize secession. We don't need and don't want D.C., its bogus wars, bogus laws, bogus taxes, and scummy politicians.

Although according to this http://www.slate.com/id/2109317/ the Constitution doesn't provide for an exit, although it describes adding. The Constitution could be amended, it has certainly been thrashed back and forth in the past, with less important things (eg, prohibition).