This Wall Street Journal piece is a great analysis of why the president has, by repeatedly changing ObamaCare rules midstream, admitted that his takeover of the health insurance/health care industry is failed public policy. 

But the White House is shredding ObamaCare’s economics on its own terms. Premiums for catastrophic products are based on the assumption that enrollees would be under 30. A 55-year-old will now get a steep discount on care courtesy of the insurer’s balance sheet, while other risk-tiers on the exchanges will have even fewer customers to make the actuarial math work.

Pulling the thread of the individual mandate also means that the whole scheme could unravel. Waiving ObamaCare rules for some citizens and continuing to squeeze the individual economic liberties of others by forcing them to buy what the White House now concedes is an unaffordable product is untenable. Mr. Obama is inviting a blanket hardship amnesty for everyone, which is what Republicans should demand.

WSJ sums things up this way:

“The basic structure of that law is working, despite all the problems,” Mr. Obama added. His make-it-up-as-he-goes improvisation will continue, because the law is failing.