The Senator would never have been able to launch a successful presidential race if he did not already have buy-in from very rich, very powerful people. Not only did he have to secure their support in order to run, he must continue securing it in order to win. That is why he will never investigate the Bush administration's well documented criminal activity. The rule of law doesn't apply to presidents, to their cabinet members, to members of Congress or to criminal corporations. Obama's backers would be most unhappy if they thought their guy was going to get into office and start calling powerful people to account on any issue. All of which means that Barack Obama will never investigate any of the crimes committed in the Bush administration.
-- Margaret Kimberley, "Obama Pardons Bush" (Black Agenda Report).