The issue is not that the ACA is causing Aetna to fail. Aetna makes an enormous amount of money on employer sponsored health care plans. Where Aetna was losing

The issue is not that the ACA is causing Aetna to fail. Aetna makes an enormous amount of money on employer sponsored health care plans. Where Aetna was losing money was on the public exchanges, a new line of business that didn't exist before the ACA. And it's not just them. Nearly all of the large insurance companies are pulling out of the exchanges because they're losing money. A lot of people believe this is because, as they are currently constructed, the public exchanges are untenable. And that's a very big deal if it's true. Not for the profitability of insurance companies, but for public health care policy in this country.