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"Some Washington D.C. observers want to know if trouble is brewing between Vice President Joe Biden and President Obama because of Biden's recent comments on gay marriage. CBS senior White House correspondent Bill Plante reports."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.cbsnews.com/videos/blunt-biden-complicates-things-for-obama-campaign/?lumiereId=50124438&videoId=677750e0-8bdf-11e2-9400-029118418759&cbsId=7407980&site=cbsnews>