evidence: On Monday, the F.D.A. did grant full approval to the Pfizer-BioNTech coronavirus vaccine for people sixteen and older, and a decision on the Moderna vaccine is likely to follow in weeks, raising the question of how far and wide the government will now push COVID-vaccine mandates. In July, the Department of Veterans Affairs became the first federal agency to require some of its employees to get the vaccine or face possible termination. President Biden recently ordered all federal workers to attest that they are vaccinated or else wear masks and get tested weekly. Within hours of the F.D.A.’s full approval of the Pfizer vaccine, the Defense Department announced that it would mandate that all 1.4 million active-duty military members be vaccinated. On the same day, public university systems in New York, Minnesota, and Louisiana rolled out similar requirements for students. Such mandates may be met with intense resistance: the Pentagon’s pre-F.D.A.-approval vaccination efforts, for example, were highly divisive, and more than a third of service members are, at present, not fully vaccinated.