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Hillary Clinton speaks at the Pennsylvania AFL-CIO's Convention on April 6, 2016 in Philadelphia, Pennsylvania.
Hillary Clinton speaks at the Pennsylvania AFL-CIO's Convention on April 6, 2016 in Philadelphia, Pennsylvania.

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    Hillary Clinton getting tougher on Bernie Sanders

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Hillary Clinton getting tougher on Bernie Sanders

After losing the Democratic primary in Wisconsin, Hillary Clinton is launching tough attacks on Bernie Sanders. CNN's Joe Johns reports.

Hillary Clinton getting tougher on Bernie Sanders

After losing the Democratic primary in Wisconsin, Hillary Clinton is launching tough attacks on Bernie Sanders. CNN's Joe Johns reports.