what has that got to do with the price of tea in china?? Ending the legal ability to refuse insurance is better than not doing it, and so advocates are rolling out these kinds of stories in the hopes that public pressure for health reform can be built.
The hope, as best I understand it, is that after the law change those with preexisting conditions will have little trouble joining large plans. In large plans the cost of one sickly person is spread amongst many, and the insurance companies will in theory be under pressure to price fairly because otherwise they will lose a lot of policy holders. The economics of health care delivery (HMO's) works on bulk, so they can not afford to let huge groups of people get away, defect to another company.