Most importantly, private parties outside government can refuse to obey any regulation issued by the new agency. They will be able to defend themselves in court by claiming that the head of the agency is an unconstitutional officer, and they will have the grounds for a good test case. They can call Richard first, me second, for advice!
I hope we don’t have to wait until the regulations are issued to resolve it, though.
Stem cells are needed to create replacements for damaged cells that die off or cease to do their jobs. Damaged stem cells are unable to perform their function. So less repair gets done as our stem cells accumulate damage and become dysfunctional with age. Biotechnology that would enable us to replace our old stem cells with younger ones would go far to slow and partially reverse aging.