FILE - In this Oct. 15, 2015 file photo, a guard tower looms over a federal prison complex which houses a Supermax facility outside Florence, in southern Colorado. Attorney General Jeff Sessions has directed the nation's federal prosecutors to pursue the most serious charges possible against the vast majority of suspects, a reversal of Obama-era policies that is sure to send more people to prison and for far longer terms. The move, announced in a policy memo sent to U.S. attorneys late on May 10, has been expected from Sessions. (AP Photo/Brennan Linsley,File)
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