Biden's lawyers say he would have authority to issue national mask mandate, if elected
Democratic presidential nominee Joe Biden on Wednesday gave a speech on the coronavirus vaccine development in Wilmington, Delaware. Before laying out his own plans, Biden warned against leaving the distribution of a potential vaccine in the hands of the Trump administration. CBSN Political Reporter Caitlin Huey-Burns joins Lana Zak with the details of Biden's speech, including his comments on implementing a national mask mandate.