President Joe Biden is calling some Republican governors "cavalier" for resisting new federal vaccine requirements he hopes will contain the surging delta variant.

Biden visited Brookland Middle School on Friday, just a short drive from the White House. He was making the case for new federal rules that could impact 100 million Americans.

All employers with more than 100 workers must be vaccinated or tested weekly for the virus, affecting about 80 million Americans. About 17 million workers at health facilities that receive federal Medicare or Medicaid also must be fully vaccinated.

"I am so disappointed that particularly some Republican governors have been so cavalier with the health of these kids, so cavalier with the health of their communities," Biden said during the visit that it isn't a game.

Georgia Governor Brian Kemp said in posts to Facebook on Friday that the President's action is "blatantly unlawful" and has spoken with other governors about the matter, but did not state what course of action he was planning to take.

Georgia Lieutenant Governor Geoff Duncan released a statement of his own Friday afternoon:

“President Biden’s vaccine mandate only served to harden the partisan lines around an issue that requires all of us working together and not against one another. I believe the vaccine is safe, effective and the only real way out of this awful pandemic, but mandates have not and will not be the answer, as President Biden has previously stated before reversing course yesterday. Forcing hard-working Americans to choose between mandated personal health decisions and a paycheck will neither reduce vaccine hesitancy nor move this country in a positive direction. Let’s all work together to redouble our efforts to get more Americans vaccinated through genuine leadership not anti-business mandates.”