2) If somehow you're able to get around the Constitutional issues, you've got another problem - the "tyranny of the status quo" which takes over about 100 days after the new guy is in office. Why not just get a bill passed immediately after taking office that 1) immediately lowers both income and sales taxes to 9% as proposed and 2) calls for BOTH a complete phase-out of income tax while creating and phasing in a sales tax? Otherwise you risk getting bogged down midstream with a sales tax without having passed a bill abolishing the income tax - a Socialists dream.
You get around the constitutional issues by keeping your eye on the conservative sparrow and electing Tea Party conservatives to the House and Senate in 2012. There are people who need to be removed from both the House and Senate. That is how we do it. Vote them out and elect someone who cares about "We the People". 2010 was a good start. We MUST do the same or better in 2012.