Dolly Parton's "9 to 5" and the U.S.-Canada trade battle

Dolly Parton, whose death was announced by her family on Tuesday, didn't write "9 to 5" as a meditation on trade policy, but the current trade battle between the Trump White House and Canada speaks to a theme in the hit song. Major Garrett explains. Then, CBS News' Anthony Mason joins to unpack Parton's legacy.