The US Justice Department knows that potentially innocent people can be victims of wrongful convictions based on flawed forensic work. But what happens to the prosecutors who allow this horrible practice to continue? Nothing.
The federal criminal law is sometimes a very dangerous, and absurd beast. In the federal criminal code, Title 18, Sections 1956 and 1957, the goverment has convinced Congress over the years to make it very easy to convict someone of "laundering" proceeds of what used to be certain criminal offenses, but which has expanded to cover virtually every single federal crime.