Actually, very glad you brought this up.
I had completely forgotten a point that is pivotal to the healthcare debate.
For those against national care, you ask why should I have to pay for someone else's care. Well, you already do. When someone who is uninsured has to use the hospital, the hospital can't refuse them. They get the care, can't pay the crazy amount and the hospital then has to eat the cost. They do that by raising costs and insurance premiums on everyone. The only difference is that under our system we cant negotiate prices as effectively and the uninsured don't have to pay in (post mandate repeal).