You are making an assumption that an American national health care system necessarily means that the U.S. would spend more money on health care than it currentl

You are making an assumption that an American national health care system necessarily means that the U.S. would spend more money on health care than it currently does. Do you have evidence for this? The U.S. spends about 16% GDP on health care and this is, by a large margin, the most spent by any rich nation on health care. I think it is hard to argue that a national health care system for the U.S. must inevitably cost more than what is currently spent in the U.S. for health care when every national health care system in the world costs less than what we currently spend.