I have been calling it "the health care Trojan horse for fascism." It is the phenomenon where government funding of health care is used as an excuse to micro-regulate individual behaviors. Apparently, the economic term is "government financing externalities."
These kinds of "government financing exernalities" are commonly used
to justify government regulations that restrict individual freedom.
Liberals use these arguments to justify such regulations as mandatory
seat belt laws, smoking bans (because government may end up subsidizing
smokers' medical treatment if they get lung cancer), and most recently
restrictions on morgage terms (because the government may bail out
people who end up defaulting). Conservatives have their own favorite
government financing externality arguments. For example, many argue
that we should restrict immigration because otherwise the immigrants
might collect welfare benefits that are paid for by taxpayers.
Obviously, the greater the role of government in financing a wide range
of activities, the greater the number of potential government financing
externalities. The expansion of government spending facilitates the
expansion of government regulation intended to curb the negative
effects of the spending.
Government financing externality arguments generate their appeal
from the fact that they seem not to be paternalistic. We are willing to
let you hurt yourself, advocates implicitly suggest, but we can't let
your bad behavior hurt the taxpayers.
The libertarian solution to this problem is to eliminate the
government financing that created the "externality" in the first place.