Iraq Security and Stabilization Fund Act - Amends the Internal Revenue Code to provide, in the case of any taxable year beginning in 2005, 2006, 2007, 2008, 2009, and 2010, for the adjustment of the highest income tax rate to result in an increase in revenues into the Treasury for all taxable years beginning in 2005, 2006, 2007, 2008, 2009, and 2010 equal to $87 billion.