Edwards defends nonprofit center during Nevada campaign stop

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Edwards noted his efforts on behalf of the center to raise the minimum wage in states, help low-income students attend college, organize workers into unions and engage young people in the fight against poverty.

"All of this was an effort to try to deal with the issue of poverty in America, which is the cause of my life," he said. "What I've been doing is not only significant and there's nothing wrong with it, it's something I'm very proud of. Everything we did was not only completely legal but we did a lot of good."

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He said people ask him why he's running for president when he's subjected to so many attacks over his personal wealth. A statement issued by Nevada Republican Party Chairwoman Sue Lowden before the event referred to his $4.2 million house and $400 haircuts.

"Does that mean I can't speak out for those who don't have a voice?" Edwards asked. "Every time you do that you're going to get attacked ... It's always been that way in America because people who have wealth and power, they don't want to hear this. They'd rather kill the messenger. They're not going to kill this voice."

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