Douglas Brinkley

Vice President Joe Biden greets New York Gov. David Paterson and New Jersey Gov. Chris Christie as he arrives at Ground Zero for the annual memorial service on Sept. 11, 2010 in New York City. (credit: Lucas Jackson-Pool/Getty Images)

Brinkley: Biden ‘The Chris Christie Of The Democratic Party’

With his political future tied irrevocably to President Barack Obama, Vice President Joe Biden is still working to preserve his own distinct identity as he contemplates a third presidential run in 2016.