“it’s incredible what we did,” he said. “You see the results.”
Other Republicans have not remained quite as steadfast in their echoing of Mr. Trump’s message on vaccines. Last year, Senator Ron Johnson of Wisconsin praised Trump’s “brilliant” Operation Warp Speed. This year, he has made a number of dubious claims about adverse reactions and deaths linked to the vaccines.
In March, Representative Marjorie Taylor Greene of Georgia praised Mr. Trump for saving lives with the vaccines. This month, she urged Americans to “just say no” to the vaccine, using Nazi-era imagery to criticize the Biden administration’s effort to reach unvaccinated people.
“People have a choice, they don’t need your medical brown shirts showing up at their door ordering vaccinations,” she tweeted. “You can’t force people to be part of the human experiment.”
Less than a week later, Senator Mitch McConnell of Kentucky, the Republican minority leader, encouraged Americans to get vaccinated, citing his experience as a childhood survivor of polio.
“We have not one, not two, but three highly effective vaccines, so I’m perplexed by the difficulty we have finishing the job,” he said.
Yet when asked by a reporter whether some of the challenge could stem from the words of members of his own party, Mr. McConnell demurred.
“I’ve already answered the question about how I feel about this,” he said. “I can only speak for myself, and I just did a few minutes ago.”