Aetna and Humana won't be stronger together. A federal judge blocked Aetna's $37 billion deal for Humana, probably ending a deal that was announced way back in July 2015. The transaction would violate antitrust laws by reducing competition among insurers, particularly among elderly users of Medicare Advantage, a U.S. district judge ruled earlier this week. Bloomberg reporter Ed Hammond, who covers health-care M&A, tells host Alex Sherman that Anthem's $48 billion deal for Cigna is almost certainly dead in the water with the decision. The two discuss what other deals may or may not make it through a new Donald Trump-led regulatory administration.

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