a few wealthy landowners a few hundred years ago created the constitution and through it the original form of the government we see horribly mutated and deformed today. that original government was a society which would give the people a voice, yet protect the minority voices from oppression by the majority. (blah blah blah slaves blah blah yeah we all can see that problem ourselves)/. this government was established to create a nation strong enough to defend itself against the imperialist powers, but gentle enough to allow the liberty of the people (the white people, the ones with balls, if you insist on dragging up every problem in history then you are the poor debater). this government and nation, like all nations is intended to exist in perpetuity. this means that descendants will presumably have the same if not greater rights to life liberty and the pursuit of happiness as their forefathers. demanding that every successive person to be born into the nation agree in toto with the codes laws and regulations, as well as every move made by the nation over the last 250 years is ridiculous.
consent is presumed based upon the knowledge that should the US have been determined to be tuely unfair and unworkable the oppressed are free to depart and raise their kids elsewhere. (case in point liberia, canada mexico etc) the US does not have an iron curtain (or a bamboo one either) keeping residents prisoner. if i decide to pack up and move to canada mexico cuba spain england france or any other nation i may, taking my wealth with me when i go. therefore remaining in this nation gives implied consent to be governed, and having the right to vote gives one a voice (however small) in the workings of the nation and your local government too.
That is consent.
the prospect of lysander spooner or yourself moving deep into the wilderness to live out your dreamy noble savage lifestyle as a back woods hermit is not irrelevant. it is HIGHLY relevant. if you believe every interaction between persons and the government which forms the framework for the society as a whole must be mutual, consensual and transactional, then moving off to the wilderness, to "Grow Beards, get Weird and disappear up in the Mountains" (~Mathers, Dre, Trice et al, 2007) is entirely relevant. in such a utopian lifestyle, you would only be disturbed in your anarcho-hermitic reverie when you chose to interact with others, and eventually when your corpse becomes food for passing wolverines and coyotes.
that lysander spooner and yourself have chosen to NOT indulge in this option (though many have) implies consent to interaction with OUR society and it's relevant government agencies and regulatory bodies.