A group of high-profile economists, the association representing state insurance commissioners, the U.S. Chamber of Commerce, key issuer lobbies and other stakeholders have submitted amicus briefs to the Supreme Court supporting health insurance companies who demand the government pay them the total $12 billion or so owed under the Affordable Care Act’s risk corridor program. The stakeholders, like the plaintiffs, warn that allowing the government to skirt payment obligations risks future business partnerships with private industry and undermines states’ trust...