The first is whether Congress would be willing to rewritethe tax code as part of the budget reconciliation process, which would foreclose a filibuster in the Senate and allow the chamber of pass a tax coderewrite with just 51 votes.
By the way, there was fewer problems when the housing and vacation home passive investments were written out of the tax code in the 1986 rewrite and there was a in the recession 1990-1991 timeframe.
The expiry of Mr Bush's tax cuts in 2011 offers the opportunity to rewrite America's labyrinthine tax code in a way that could be both progressive (as Mr Obama wants) and pro-growth (Mr McCain's concern).
White House officials say Obama is serious about a corporate tax rewrite, but he does not seem prepared to take on the individual revenue code as well.