All governments already have this power, and always have. You can argue that public health measures should not be the province of government, but that would be

All governments already have this power, and always have. You can argue that public health measures should not be the province of government, but that would be a pretty fringe position. You are essentially arguing that there is never a good reason for governments to infringe individual liberties. This is the religious libertarian I am talking about. I recognize it. I used to be one. If you say instead that it is a legit function of government, but shouldn't be used in this case because on balance the risk is too small to sacrifice liberty for, that's certainly a discussion that could be had.