"Former Presidents and Executive Privilege" by Laurent Sacharoff (Temple University Beasley School of Law).
This article argues that a new President may review a previous administration's assertions of
executive privilege and should disclose the previously withheld
information if doing so would be in the public interest. Executive privilege arises from a President's Article II powers; when a
new President arrives, she enjoys plenary Article II powers, including
the right to assert or waive executive privilege. The Privilege is not personal to any individual President but rather may only be asserted in the public interest, and a new President should review previous assertions of executive privilege vigorously, since Congress cannot determine whether a particular President has abused the privilege to hide evidence of wrongdoing in his administration. HT to National Security Advisors.