News Biden delays enforcement of COVID-19 vaccine-or-test rules for businesses as courts hear legal challenges December 18, 2021Maureen Groppe and John Fritze, USA TODAYComments Off on Biden delays enforcement of COVID-19 vaccine-or-test rules for businesses as courts hear legal challenges Workers who are not fully vaccinated won't have to be regularly tested until Feb. 9, more than a month after the original Jan. 4 deadline.