Lawsuits over workplace vaccine rule focus on states' rights

In this Oct. 21, 2020, file photo, an Exam Corp Lab employee, right, wears a mask as she talks with a patient lined up for COVID-19 testing in Niles, Ill. Millions of U.S. workers now have a Jan. 4 deadline to get a COVID vaccine. The federal government on Thursday, Nov. 4, 2021 announced new vaccine requirements for workers at companies with more than 100 employees as well as workers at health care facilities that treat Medicare and Medicaid patients. (AP Photo/Nam Y. Huh, File)