While it would be unfair to give all the credit to the republicans, their biggest achievement was the beginning of the destruction of the middle class in America, followed by these wonders: humongous deficits, made the rich richer through unjust tax policy that did not consider the overall impact on the nation, invaded a sovereign nation based on fear alone, failed to protect America from the attack on 911, were too incompetent to capture bin Laden, cozied up to corporate power, selected two more fascists to the supreme court and then allowed these fascists to support corporations as people, failed America in Katrina, failed to regulate derivatives even legislated for this failure, failed to control the housing bubble, made America look incompetent and inarticulate in the world, destroyed worker rights starting with Reagan, failed to control immigration, failed to raise and support standards in education, failed to manage and support the infrastructure, failed the environment, failed to provide a substantive energy policy raising gas was over 4 dollars, failed employment and lowered the wages of the working person. And fought against minimum wage! How can anyone be a republican!
That's just a start.
A longer list is here:
http://www.conceptualguerilla.com/?q=node/393
And more of their accomps here:
The Conservative Nanny State
"Capitalism is the astounding belief that the most wickedest of men will do the most wickedest of things for the greatest good of everyone." John Maynard Keynes