World's Fastest Man Usain Bolt: `I'm Clean'

July 31 (Bloomberg) -- Six-time Olympic champion Usain Bolt of Jamaica speaks at a news conference about his career accomplishments and competing "clean" of drugs. Adam Johnson reports on Bloomberg Television's "Lunch Money." (Source: Bloomberg)

Harvard's Marty Feldstein Says Border Tax 'Misunderstood'
04:23 - Harvard University Professor of Economics Martin Feldstein explains the economic benefits of a U.S. border tax adjustment. He speaks on "Bloomberg Daybreak: Americas." (Source: Bloomberg)
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