In 2009, Secretary of State Hillary Clinton tapped San Antonio lawyer José Villarreal to be the pavilion's commissioner general -- essentially the manager of the U.S. presence and the public face of the U.S. government at the World Expo. . . . While the opportunity to take part in an event that Villarreal's staff modestly calls "the largest event in world history" is certainly understandable, the early reviews of the U.S. pavilion and the U.S. presence are less than stellar.Liberal blogger Matthew Yglesias writes at his Think Progress blog that the U.S. pavilion is "a national humiliation": T]hey really only...