This from Bloomberg Politics:
Obama came to office promising to reduce the number of Americans imprisoned for nonviolent drug offenses, and in 2010 signed a law reducing disparities in sentences for possession of crack and powder cocaine. Some Republicans and police organizations criticized the moves as too lenient, but now a bipartisan coalition that includes Obama’s chief political antagonists, billionaires Charles and David Koch, have joined him to support relaxing federal sentencing guidelines.
More than 2.2 million adults are imprisoned in the U.S., the most in the world, and the incarceration rate is between five and 10 times higher than in Western European countries, according to the National Research Council. Lawmakers in both parties have been raising alarms about the cost of mass incarceration to taxpayers and to minority communities that are disproportionately the source of prisoners.