Biden to launch vaccine push for millions of federal workers

President Joe Biden holds a mask as he responds to a question as he arrives at Lehigh Valley International Airport in Allentown, Pa., Wednesday, July 28, 2021. Biden is in the area to visit the Lehigh Valley operations facility for Mack Trucks and advocate for government investments and clean energy as ways to strengthen U.S. manufacturing. (AP Photo/Susan Walsh)

WASHINGTON — Hoping to set a model for employers nationwide, President Joe Biden will announce Thursday that millions of federal workers must show proof they’ve received a coronavirus vaccine or submit to regular testing and stringent social distancing, masking and travel restrictions.