Bumpy week for potential candidate Donald Trump

NEW YORK (Reuters) - He was ribbed by President Barack Obama, called a racist by David Letterman, accused of being a draft dodger and gave an expletive-laced political speech.

Source: http://feeds.reuters.com/~r/Reuters/PoliticsNews/~3/7K70uexSNmg/us-usa-campaign-trump-idUSTRE73T00020110430

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