Check out an article about numerous mistakes of the U.S. criminal justice system and how the Bush administration wants to address the problem. G.W.Bush is known for strongly supporting a death penalty but he also realizes that wrongful convictions happen throughout the U.S. It seems that the government has a plan how to fight it:

http://europeancourier.org/home.htm

The title of the article is "USA: Errors of Criminal Justice System"