The new measures, which Biden laid out in remarks from the White House, would apply to about two-thirds of all US employees -  those who work for businesses with more than 100 workers. The new policies are Biden's most aggressive steps yet to prod Americans resistant to vaccination as the fast-spreading Delta variant sparks a new wave of sickness and death. Despite a full-throttle campaign by the Biden administration to persuade Americans to get the free and widely available vaccines, just over 62% of eligible Americans are fully vaccinated, according to the US Centers for Disease Control and Prevention.