The number of people under supervision in the nation's criminal justice system rose to 7.2 million in 2006, the highest ever, costing states tens of billions of dollars to house and monitor offenders as they go in and out of jails and prisons. According to a recently released report released by the Bureau of Justice Statistics, more than 2 million offenders were either in jail or prison in 2006, the most recent year studied in an annual survey. Another 4.2 million were on probation, and nearly 800,000 were on parole. The cost to taxpayers, about $45 billion, is causing states such as California to reconsider harsh criminal penalties. In an attempt to relieve overcrowding, California is now exporting some of its 170,000 inmates to privately run corrections facilities as far away as Tennessee. There are a number of states that have talked about an early release of prisoners deemed non-threatening," said Rebecca Blank, a senior fellow in economic studies at the Brookings Institution. "The problem just keeps getting bigger and bigger. You're paying a lot of money here. You have to ask if some of these high mandatory minimum sentences make sense." The bureau's report comes on the heels of a Pew Center on the States report showing 1 percent of U.S. adults behind bars, a historic high. The United States has the largest number of people behind bars in the world, according to the Pew report. Black men, about one in 15, were most affected, and Hispanics, one in 35, were well represented among offenders. The number of women in prison "rose faster in 2006 than over the previous five years."

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