Michael Vi
The new rules for businesses are set to go into effect Jan. 10, when unvaccinated employees would be required to wear masks on the job. The vaccinate-or-test provision would kick in on Feb. 9.

On Jan. 7, the court focused on whether the federal government has the legal authority to issue the orders. Justices appeared to be split along ideological lines. The court could issue a decision in the two cases in a matter of days.