VAT and sales tax are very regressive from a tax structure standpoint (which is probably why conservatives like them). This should probably be in the "war on poverty" thread. If they do try it, would be interesting to see what new lie the Obama machine creates to tell poor people it's not a tax on them (something they're very good at doing).
Not totally opposed to it, IF it's earmarked to reducing the deficit and for nothing else. Pretty sure they'd need a Constitutional Amendment to enforce one, not sure it fits w/in the 16th Amendment, but could be wrong.