Dr. Fauci on CDC's reimposed mask guidelines, vaccinations

The Centers for Disease Control and Prevention reimposed stricter mask-wearing guidelines Tuesday. It said Americans, even if fully vaccinated, should wear masks indoors in regions where COVID-19 infections are high, and recommended that everyone in K-12 schools mask up. Dr. Anthony Fauci, director of the U.S. National Institute of Allergy and Infectious Diseases, joins Judy Woodruff to discuss.