When is the use of regulation appropriate in a mixed public-private health services delivery system like we have in the U.S.?

When is the use of regulation appropriate in a mixed public-private health services delivery system like we have in the U.S.? Give examples where you think that regulation is important. 2. Explain the meaning of public in the term public health, and provide an example of a public health service. Why did the U.S. health services system begin with a focus on public health?