Democracy Now held an interview with Robert McChesney, professor of communication at the University of Illinois, who called Secretary Clinton "one of the most perceptive critics of American media". McChesney makes a strong case for the U.S. public diplomacy [without using this term] by saying:
"The smart thing to do is ... [to] create a really dynamic, strong, competitive public and community broadcasting system that treats the U.S. government the same way it treats other governments, the same standard of journalism, then broadcast that to the world ... [T]hat would show the United States at its very best. And that would be a voice that would have a great appeal to people around the world who are yearning for freedom and democracy and it would enhance the U.S. position in the world more than anything possible could."
Prof. McChesney spoke at length about American journalism; his interview is worth watching.
P.S. Prof. McChesney's interview starts in the middle of the video.