For companies that were waiting to hear from the U.S. Supreme Court before deciding whether to require vaccinations or regular coronavirus testing for workers, the next move is up to them. Many large corporations were silent on Thursday’s ruling by the high court to block a requirement that workers at businesses with at least 100 employees be fully vaccinated or else test regularly for COVID-19 and wear a mask on the job. Target’s response was typical: The big retailer said it wanted to review the decision and “how it will impact our team and business.” The Biden administration argues that nothing in federal law prevents private businesses from imposing their own vaccine requirements.