EPI has produced extensive research and commentary about the Bush-era tax cuts, the impact they have had and the likely outcome of extending some or all of them. Attached are some highlights

Let the tax cuts for the rich expire

How to Lose Over a Million Jobs: Sacrifice Investments to Cut Taxes for the Rich

What Would You Do With $67 Billion?  

Should all the Bush tax cuts be extended?

Balance the Budget, but Not on the Backs of the Poor

The 2009 Budget Deficit How did we get here?  

Tax cut approach has already been tried and failed as stimulus