What are they gonna do if ya dont!?!?!?!
Take it out your estate, plus penalties, fines and interest. Also note, that in cases of fraud, they can take your house. If your spouse and children knew, then they are on the hook criminally as well. When it comes to scary effective law enforcement in the US, the IRS and the Postal Inspectors have them all beat hands down. As much as they could be better used catching terrorists it is what it is. As far as the taxes are unconstitutional bit, ask Sammuel L. Jackson, who is doing three to five in club fed after relieing on a video/seminar like the one you mentioned. I think Wednesday is for visitors. If you are thinking of trying this DON'T! The sixteenh ammendment vitiated the "no head taxes" clause. Hell, Lincoln got away with them in the Civil War, even without the ammendment, under the War Powers Doctrine. The bottom line is, if you try this, you will lose, and lose hard. I may be a Libertarian, but I also teach poli-sci and con law for a living. Just don't go there.
fightingquaker13