Just a die-hard, well-connected winger who knew that in order to rise in the right-wing hierarchy, you keep telling them what they want to hear.
http://www.nytimes.com/2005/12/23/politics/23yoo.html?ei=5094&en=5042388cf1a7b569&hp=&ex=1135400400&partner=homepage&pagewanted=printThat Washington tale began about a decade before Mr. Yoo joined the administration in July 2001, when he finished at Yale Law School and won a
clerkship with Judge Laurence H. Silberman of the United States Court of Appeals for the District of Columbia Circuit, a keen spotter of young legal talent and a patriarch of the network of conservative lawyers who have occupied key positions throughout the Bush administration.
By then, Mr. Yoo already thought of himself as solidly conservative. He had grown up with anticommunist parents who left their native South Korea for Philadelphia shortly after Mr. Yoo was born in 1967, and had honed his political views while an undergraduate at Harvard.
From the chambers of Judge Silberman, Mr. Yoo moved on to a
clerkship with Justice Clarence Thomas on the Supreme Court, stopping briefly at Berkeley. Justice Thomas helped place him with
Senator Orrin G. Hatch, Republican of Utah, as general counsel on the Senate Judiciary Committee.
Along the way, Mr. Yoo passed up a chance to work in the Washington office of the law firm Jones Day, where he
caught the eye of a senior partner, Timothy E. Flanigan. After five years that Mr. Yoo spent at Berkeley, writing on legal aspects of foreign affairs, war powers and presidential authority, the two men met up again when Mr. Yoo joined the
Bush campaign's legal team, where Mr. Flanigan was a key lieutenant.