Nightly News   |  December 14, 2011

Romney calls Gingrich ‘zany’

GOP presidential hopeful Mitt Romney said frontrunner Newt Gingrich is too "zany" to be president. Meanwhile, Gingrich was confronted by shouting protestors during a campaign event at the University of Iowa. NBC’s Brian Williams reports.

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BRIAN WILLIAMS, anchor: Now in this country, to politics on the GOP campaign trail and a sharp new attack today by Mitt Romney on the front-runner Newt Gingrich . Romney warning that Gingrich is too, quote, "zany to be president." Meanwhile in Iowa today, Gingrich was confronted by shouting protesters during a campaign event at the University of Iowa .