Mr. Biden had anticipated the attacks. In announcing his plan on Thursday, he said that he would do what he could to “require more Americans to be vaccinated to combat those blocking public health,” adding “If those governors won’t help us beat the pandemic, I will use my power as president to get them out of the way.”
On Friday, Mr. Biden said that his mandates would withstand Republican challenges.
“Have at it,” said Mr. Biden, who was delivering remarks at a middle school in Washington. “I am so disappointed, particularly that some of the Republican governors have been so cavalier with the health of these kids, so cavalier with the health of their communities.”
Gov. Greg Abbott of Texas called the actions an “assault on private businesses” in a statement on Twitter. He said he issued an executive order protecting Texans’ right to choose whether or not they would be vaccinated. “Texas is already working to halt this power grab,” he wrote.
Gov. Doug Ducey of Arizona wrote on Twitter: “The Biden-Harris administration is hammering down on private businesses and individual freedoms in an unprecedented and dangerous way.” He questioned how many workers would be displaced, businesses fined, and children kept out of the classroom because of the mandates, and he vowed to push back.
Mr. Biden’s vaccination requirements will be imposed by the Department of Labor and its Occupational Safety and Health Administration, which is drafting an emergency temporary standard to carry out the mandate, according to the White House.
OSHA oversees workplace safety, which the agency is likely to contend extends to vaccine mandates. The agency has issued other guidelines for pandemic precautions, such as a rule in June requiring health care employers to provide protective equipment, provide adequate ventilation and ensure social distancing, among other measures.
The vaccine requirements, drew praise from doctors and scientists who have for months stressed the urgency of increasing vaccination rates to contain the spread of the highly contagious Delta variant, which has raised the national caseload to heights last seen in January, overwhelmed hospitals in hard-hit areas and contributed to the deaths, on average, of more than 1,575 people a day.