The need to “do something” about mass incarceration is now widely recognized. When President Obama announced plans to reform federal criminal legislation, he focused on the need to change how we handle non-violent drug offenders and parole violators. Previously, former Attorney General Eric Holder announced policies to make federal prosecutors “smart on crime.” These changes reflect, as President Obama noted, the increasing bipartisan consensus on the need for reform and the need to reduce our incarceration rates. However, proposals about what to reform, such as President Obama’s, tend to focus on some parts of criminal sentencing and on prosecutorial behavior as stand-alone issues. These reform suggestions do not consider the fact that nin...