
A progressive organization called "The Backbone Campaign" is travelling around the country offering you a chance to sign our precious preamble too. At each stop they add another 20 feet of signing space. The whole thing is 70 feet long now.
This will be a very impressive document when finished. Think about what the preamble says about the founders attempt to form a more perfect union (not an absolutely perfect one--instead a more perfect one) and consider adding your signature as an endorsement of their goals. Of course, those founders also established a way to alter it, delete sections and generally tweak it too.
Just to refresh your memory:
We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.