That is the model built by the conservative herita
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It's also the model for Romneycare.
Clearly the health insurance companies held sway because they insisted on having healthier enrollees in the mix to be able to offer the reforms we have.
A public option would have forced more competition on the insurance companies, end of story there.
'Medicare for all' would've been another low overhead way to go. You're already contributing in your payroll check.
Kick up the contributions, eliminate the costly health insurance middlemen, and you've got lower cost wider coverage HC.
All of it funneled through private medical practices and hospitals, just like now.