John Pfaff was cited in David Brooks’s New York Times op-ed column about America’s incarceration problem. Brooks dispels popular explanations for why the country’s prison population is so large—mandatory-minimum sentencing laws, the War on Drugs—using Pfaff’s data-driven research.
The mandatory-minimum theory is also problematic. Experts differ on this, but some of the most sophisticated work with the best data sets has been done by John Pfaff of Fordham Law School. When I spoke with Pfaff on Monday I found him to be wonderfully objective, nonideological and data-driven.
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So what does explain it? Pfaff’s theory is that it’s the prosecutors. District attorneys and their assistants have gotten a lot more aggressive in bringing felony charges. Twenty years ago they brought felony charges against about one in three arrestees. Now it’s something like two in three. That produces a lot more plea bargains and a lot more prison terms.
I asked Pfaff why prosecutors are more aggressive. He’s heard theories. Maybe they are more political and they want to show toughness to raise their profile to impress voters if they run for future office. Maybe the police are bringing stronger cases. Additionally, prosecutors are usually paid by the county but prisons by the state, so prosecutors tend not to have to worry about the financial costs of what they do.
Pfaff says there’s little evidence so far to prove any of these theories, since the prosecutorial world is largely a black box. He also points out that we have a radically decentralized array of prosecutors, with some elected and some appointed. Changing their behavior cannot be done with one quick fix.