FILE - In this June 21, 1974 , file photo former Nixon White House aide Charles W. Colson arrives at U.S. District Court in Washington to be sentenced for obstructing justice.  Colson, the tough-as-nails special counsel to President Richard Nixon who went to prison for his role in a Watergate-related case and became a Christian evangelical helping inmates, has died. He was 80. Jim Liske, chief executive of the Lansdowne-based Prison Fellowship Ministries that Colson founded, said Colson died Saturday, April 21, 2012. (AP Photo/Bob Daugherty) ORG XMIT: NY204
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