And immunizing the President from the generally applicable criminal prohibition against corrupt obstruction of official proceedings would seriously impair Congress’s power to enact laws “to promote objectives within [its] constitutional authority,” Administrator of General Services, 433 U.S. at 425—i.e., protecting the integrity of its own proceedings and the proceedings of Article III courts and grand juries. Accordingly, based on the analysis above, we were not persuaded by the argument that the President has blanket constitutional immunity to engage in acts that would corruptly obstruct
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