You can be 100% sure these things "pan out" in the sense of resulting in convictions, because a lot of people are going to plea-bargain when confronted by the DEA, whether they are actually guilty or not.
Essentially, once you have poisoned the actual trial process (and this shows just how poisoned it is), no statistics about "how effective this is" are going to mean anything. After all, I'm sure some DEA agents know they're convicting innocent people I'm sure others have blanket belief in the guilt of many innocent people. It's kind of a truism - once you abandon objective, unbiased inquiry, it's gone.
Essentially, once you have poisoned the actual trial process (and this shows just how poisoned it is), no statistics about "how effective this is" are going to mean anything. After all, I'm sure some DEA agents know they're convicting innocent people I'm sure others have blanket belief in the guilt of many innocent people. It's kind of a truism - once you abandon objective, unbiased inquiry, it's gone.