It might be best to improve Obamacare than to change the system to Medicare for all. I have personally talked with people from countries where the government controls healthcare. They say the same thing: "It takes about six months to see a doctor. Surgeries are scheduled for six months out -- even life or death surgeries." In most of those countries, there are no emergency rooms and if someone gets really sick, they have to pay "under the table" to get healthcare. What happens is that taxes are raised extremely high and there is the added cost of under the table" to actually get medical care.