It upholds a February ruling that said the proposed $48 billion acquisition would reduce competition in the concentrated insurance market.
By Sam Hananel, Associated Press
Insurers are often under competitive pressure to change network providers from year-to-year. But those changes can catch customers, especially of Medicare Advantage plans, off guard.
By Philip Moeller
Until last year, Wendell Potter worked for both Cigna and Humana health care for two decades. He's now a senior fellow on health care with the Center for Media and Democracy, a liberal research group. He speaks to Gwen Ifill…
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