No evidence that vaping is safer than smoking long term, cancer expert says

The White House is moving to curb the vaping epidemic in America that's linked to at least six recent deaths. A new initiative would ban most flavored e-cigarettes, allowing only tobacco flavor. Cases of possible vaping- related illnesses have been reported in at least 36 states, including Hawaii, Idaho, and Washington, which just reported their first cases this week. Dr. David Agus joins "CBS This Morning" to discuss why we still don't know the full health impact of e-cigarettes and the challenges of regulating them.