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Newt Gingrich is on trial in Iowa _00004514
Newt Gingrich is on trial in Iowa _00004514

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    Newt Gingrich playing defense in Iowa

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Newt Gingrich playing defense in Iowa

GOP presidential candidate Newt Gingrich is undergoing scrutiny in Iowa. CNN's Jim Acosta reports.

Newt Gingrich playing defense in Iowa

GOP presidential candidate Newt Gingrich is undergoing scrutiny in Iowa. CNN's Jim Acosta reports.