These companies are insisting on Covid-19 vaccines for their employees

After months of encouraging employees to get vaccinated against Covid-19, companies are beginning to take a harder line and roll out mandates — a dramatic escalation of Corporate America's approach to halting the spread of the virus. Momentum for vaccine mandates has been building, and President Joe Biden was expected on Thursday to announce a requirement that all federal employees and contractors be vaccinated or be required to submit to regular testing and mitigation requirements. On Wednesday, Google and Facebook became the first two Silicon Valley giants to issue mandates of their own.