Lawyers for former Senator John Edwards said his client committed "many sins but no crimes" and said the charges against him should never have been brought to trial.
Edwards was found not guilty of one count of campaign fraud, and the jury were unable to reach a verdict on the remaining five counts, forcing the judge to declare a mistrial.
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Tony Blair has said Leave campaigners are focusing on immigration "because they've lost comprehensively the debate on the economy".
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