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ABC News' Rick Klein Reports: When an Iowa resident asked former senator John Edwards Thursday whether the United States should follow the Cuban healthcare model, the 2004 vice presidential contender deflected the question by saying he didn't know enough to answer the question.

"I'm going to be honest with you -- I don't know a lot about Cuba's healthcare system," Edwards, D-N.C., said at an event in Oskaloosa, Iowa. "Is it a government-run system?"...