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Holder officially backs reduced prison sentence proposal

Attorney General Eric Holder's efforts could reduce the sentences of as many as 20,000 currently incarcerated individuals by an average of 23 months.

U.S. Attorney General Eric Holder
U.S. Attorney General Eric Holder at the White House on May 30, 2014 in Washington, DC.Getty Images

Trymaine Lee

Trymaine Lee is an NBC News correspondent.