Former Romney 2012 policy director on how Trump should approach debate

President Trump and Joe Biden have their last chance to face one another and make their pitches to the American voters in the final presidential debate of the year. Lanhee Chen, the policy director for Mitt Romney's 2012 presidential campaign and an adviser for Marco Rubio's 2016 presidential campaign, joined CBSN's "Red & Blue" to discuss how President Trump should approach the last debate.