But top health experts say that it is simply not enough, and that the president needs to take the potentially unpopular step of encouraging states, employers and colleges and universities to require vaccinations to slow the spread of the coronavirus... “I’m trying to restrain myself, but I’ve kind of had it,” said Kathleen Sebelius, who was the health secretary for five years under President Barack Obama. Schools and businesses should be encouraged to require the vaccine, she said. “You know, we’re going to tiptoe around mandates,” she said. “It’s like, come on. I’m kind of over that. I want to make sure that people I deal with don’t have it so I don’t transmit it to my granddaughter.”