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US Vice President Joe Biden gives two thumbs-up prior to US President Barack Obama delivering the State of the Union address before a joint session of Congress on January 28, 2014 at the US Capitol in Washington.  AFP PHOTO/Saul LOEB        (Photo credit should read SAUL LOEB/AFP/Getty Images)
US Vice President Joe Biden gives two thumbs-up prior to US President Barack Obama delivering the State of the Union address before a joint session of Congress on January 28, 2014 at the US Capitol in Washington.  AFP PHOTO/Saul LOEB        (Photo credit should read SAUL LOEB/AFP/Getty Images)

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    V.P. Joe Biden's decision coming down to the wire

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V.P. Joe Biden's decision coming down to the wire

As Vice President Joe Biden mulls a 2016 run for the White House, he appears to have taken public jabs at Democratic candidate Hillary Clinton. CNN's Jeff Zeleny reports.

V.P. Joe Biden's decision coming down to the wire

As Vice President Joe Biden mulls a 2016 run for the White House, he appears to have taken public jabs at Democratic candidate Hillary Clinton. CNN's Jeff Zeleny reports.