The problem seems like the dems solution to me.
There are private companies, which, to many of the people, companies are always doing all of the evils. Now private companies don't just let you join up when you are diagnosed with cancer -- and these people cry "that is so unfair! Evil corporate america!" (here they really mean, that is so 'unequal'. It is fair for you to choose between driving a new car with no health insurance and driving an old car with health insurance.) Of course, that gets the heart strings in America going and feeling bad for these people.
Then the next question to be answered is, how do we prevent this from happening? Well, you look at economics. Economics says you can't just let people with cancer jump on the wagon because then no one would have health insurance and they'd all just wait to jump on the wagon, total bankruptcy. However, you have all these low risk people sitting around with no health insurance, very low risk, if they paid into the system (or were forced, perhaps?) they would offset all those people with a new car and cancer. And that is it in a nutshell, from each according to his abilities and to each according to his needs.