“And the best precedent for that is George H.W. Bush, who pardoned Casper Weinberger and five other people on the eve of the trial,” Dershowitz said. “The special prosecutor said he obstructed justice, but he couldn’t be charged with it. And they never mentioned the Bush case in the Mueller report. Mueller was in the Bush administration. Barr was in the Bush administration. And they deliberately omit as the leading precedent, which would preclude a president from being charged with obstruction for simply exercising his constitutional authority.”