'Gangnam Style', from S. Korea's Psy, Storms Web

Aug. 20 (Bloomberg) -- Matt Miller reports on rapper Psy's new music video, which has gone viral. He speaks on Bloomberg Television's "Street Smart." (Source: Bloomberg)
Rick Perry Lays Down a Challenge to Donald Trump
39:06 - On "With All Due Respect," Mark Halperin and John Heilemann discuss Rick Perry’s response to Donald trump’s remarks that the former Texas governor doesn’t belong on the main debate stage.
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