BUT.............. There's always a stickler. How do you withdraw from a government that is tyrannical? The Confederates tried and were forced back into the union at the barrel of a gun.
For all intents and purposes, the confederacy withdrew consent. It becomes even less likely on an individual basis when you give people power over you and society as a whole with the force of arms.
We supposedly have the right to alter or abolish said government, this government makes King George look like an amateur choir boy when it comes to abusing people and their creator endowed rights. Yet supposedly with 13% approval rating (congress) and 40%+/- for President this is supposedly a representative government.
Sorry, but I fail to see how setting up a public trust (which I believe you were advocating, correct me if I'm wrong) will be any different since it's been tried already and dived head first into tyranny in less than 250 years.
The point in all of this is, how can you setup a system where the people have the right to withdraw? When a government grows it always assumes powers it doesn't have, try withdrawing now you'll have a gun pointed at you and threatened with death or imprisonment.