President-elect Biden calls on Americans to wear masks for his first 100 days in office

President-elect Joe Biden says he wants the American public to wear masks for his first 100 days in office to help slow the spread of COVID-19. Mr. Biden continues to build out his coronavirus pandemic response team, and Dr. Anthony Fauci has accepted his offer to join the administration as chief medical adviser. CBS News political correspondent Ed O'Keefe joined "CBSN AM" with the latest.