"It will be unaccountable bureaucrats sitting in some D.C. office building who decide what care will be reimbursed and for whom, when there is insufficient funding to satisfy demand. (And believe me, there will be far more demand than will be able to be paid for.) If doctors won't provide the care when they are not paid, and if people die as a result, well -- call it whatever you like."
IOW, it's not any different than the system we already have. Just different bureaucrats sitting in different chairs.