The primary problem is the growth in federal spending. Tax receipts are simply a source of financing for that spending. You can reduce marginal rates to create a more attractive environment for investment and enterprise, but if you continue to boost spending levels then the pressure will exist for those rates to be increased back to their pre-cut levels.
The last 5 years have been extremely disappointing from a fiscal POV, especially for a GOP presidency combined with near total GOP control of the Congress. Don't blame the war or the Katrina give-out fest, from the beginning it was clear a GOP Congress could not put principle before giving a popular presidency in their own party whatever he wanted. And what he wanted was re-election. How does a sitting president improve his chances of being re-elected? Spend, spend, spend, spend.....