Mandating the COVID-19 vaccine has been called presidential overreach, un-American, even unprecedented, despite a long history of requiring vaccines to prevent other illnesses. In August, President Joe Biden mandated employees at all companies with more than 100 employees get vaccinated or undergo routine testing. And now, beginning in early November, federal agencies can enforce that same mandate on federal employees. Mass firings have occurred; but more often than not, employees chose to get the shot over losing their job. On this week's episode, Lawrence Gostin, JD, professor of global health law at Georgetown University, author of the new book "Global Health Security," and director of the World Health Organization Collaborating Center for National and Global Health Law, joins us to discuss where we may see legal challenges and if those challenges have a sound footing.