In its waning weeks, the Trump administration is announcing a new rule that ties the prices Medicare pays for many physician-administered drugs to the lowest prices in other countries.

Drug prices are lower in other countries because they are regulated.

https://www.cms.gov/newsroom/press-releases/trump-administration-announces-prescription-drug-payment-model-put-american-patients-first

President Trump's new rule would tie the prices paid by Medicare to physicians for drugs they administer to the prices in other countries.

It would not apply to drugs bought in pharmacies. And, it would not apply to anyone other than Medicare patients.

https://www.cms.gov/newsroom/fact-sheets/fact-sheet-most-favored-nation-model-medicare-part-b-drugs-and-biologicals-interim-final-rule/

President Trump has used administrative authority extensively to push his health care agenda. The incoming Biden Administration will likely follow a similar playbook if the Senate remains in Republican hands (though will probably try to get sued less frequently than Trump).