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Senator Patrick Leahy (pictured) has "proposed
the idea of a truth and reconciliation commission to investigate abuses during the Bush-Cheney Administration -- so they never happen again. These abuses may include the use of torture, warrantless wiretapping, extraordinary rendition, and executive override of laws." He has posted a petition "urging Congress to consider establishing a truth and reconciliation commission to investigate the Bush-Cheney Administration's abuses".
Being objective, we cannot offer advice on the petition but those who are interested in it for research purpose
might have a glance in this direction.