Say what you like about Robert McNamara, he did ask for the Pentagon Papers to be written. I'm not so sure that the people currently atop the U.S. government would be similarly inclined. From Sanford Ungar's The Papers & The Papers: An Account of the Legal and Political Battle over The Pentagon Papers (1972):
In a gesture that was remarkable for an architect of a war that had torn the nation apart, McNamara ordered the collection of a set of documents that, on release, could expose his own judgment to harsh criticism and bitter attack. He wanted scholars to be able to examine the economic, political, and military bases of Vietnam policy when they eventually came to analyze how the war grew out of the inherited postulates of post-World War II American politics ... [McNamara said his objective] "was to bequeath to scholars the raw material from which they could reexamine the events of the time. If historians are to make a careful examination, they need the raw materials. I simply asked that these be brought together, and I have no regrets for having done so." (pg. 27)