A quick history lesson from John Yoo, a leading thinker on executive power who was a George W. Bush deputy assistant attorney general in the aftermath of 9/11, and is now a Berkeley law professor. In a N.Y. Times Op-Ed, "Forget Watergate. Think Iran-Contra," Yoo writes:
John Yoo: Watergate is the wrong Trump comparison
Trump's comments [in the Comey notes] come close to obstruction of justice but don't clearly cross the line. ... While he set out his favorable opinion of Mr. Flynn, he stopped short of ordering Mr. Comey to drop the investigation. Mr. Trump's words carried an implicit recognition that Mr. Comey would make the final call.