Conspiracy theories depend on the perpetrators being endlessly clever, but you'll find the facts also work if you assume everyone is endlessly stupid.
Rough justice in America: Too many laws, too many prisoners, from The Economist
I found this interesting article which summarizes America's incarceration fixation:
Justice is harsher in America than in any other rich country. Between 2.3m and 2.4m Americans are behind bars, roughly one in every 100 adults. If those on parole or probation are included, one adult in 31 is under “correctional” supervision. As a proportion of its total population, America incarcerates five times more people than Britain, nine times more than Germany and 12 times more than Japan. Overcrowding is the norm. Federal prisons house 60% more inmates than they were designed for. State lock-ups are only slightly less stuffed.
The system has three big flaws, say criminologists. First, it puts too many people away for too long. Second, it criminalises acts that need not be criminalised. Third, it is unpredictable. Many laws, especially federal ones, are so vaguely written that people cannot easily tell whether they have broken them.
In 1970 the proportion of Americans behind bars was below one in 400, compared with today's one in 100. Since then, the voters, alarmed at a surge in violent crime, have demanded fiercer sentences. Politicians have obliged. New laws have removed from judges much of their discretion to set a sentence that takes full account of the circumstances of the offense. Since no politician wants to be tarred as soft on crime, such laws, mandating minimum sentences, are seldom softened. On the contrary, they tend to get harder.