Experts reveal the explicit — and implicit — meaning behind Harris-Biden speeches

Experts say Vice President Kamala Harris and President Joe Biden's joint Labor Day appearance in Pittsburgh shows a recognition that Democrats need to do more in so-called "Blue Wall" states — and cemented a "passing of the torch."

Biden and Harris told rally-goers in the industrial city that U.S. Steel should remain in U.S.owned and operated as they opposed a deal that would merge the firm with Nippon Steel of Japan. The duo also made their case as to why labor unions ought to vote blue in November.