Frieden on alarming spread of coronavirus in 30 U.S. states

The United States is struggling to hold back the coronavirus. More than 30 states are reporting a rise in infections, and several are now reconsidering their plans to loosen restrictions and reopen economic activities. William Brangham talks to Dr. Tom Frieden, who previously led the Centers for Disease Control and Prevention and now heads a global health initiative called Resolve to Save Lives.