The burglary of the office of Dr. Ellsberg's psychiatrist was raised at the Senate Watergate hearings on July 24, 1973. Chief Counsel Samuel Dash asked John Ehrlichman about the burglary.

Ehrlichman responded:

"I think if it is clearly understood that the President has the constitutional power to prevent the betrayal of national security secrets, as I understand he does, and that is well understood by the American people, and an episode like that is seen in that context, there shouldn't be any problem."

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Read more about '73, and the scandal.

Bush:

"This is a highly classified program that is crucial to our national security. Its purpose is to detect and prevent terrorist attacks against the United States, our friends and allies. Yesterday the existence of this secret program was revealed in media reports, after being improperly provided to news organizations. As a result, our enemies have learned information they should not have, and the unauthorized disclosure of this effort damages our national security and puts our citizens at risk. Revealing classified information is illegal, alerts our enemies, and endangers our country.

(Hat tip dakati for the research)