Opinion of the Court
imately 87 percent of people who bought insurance on a Federal Exchange did so with tax credits, and virtually all of those people would become exempt. HHS, A. Burke, A. Misra, & S. Sheingold, Premium Affordability, Competition, and Choice in the Health Insurance Marketplace 5 (2014); Brief for Bipartisan Economic Scholars as Amici Curiae 19–20. If petitioners are right, therefore, only one of the Act’s three major reforms would apply in States with a Federal Exchange.
The combination of no tax credits and an ineffective coverage requirement could well push a State’s individual insurance market into a death spiral. One study predicts that premiums would increase by 47 percent and enrollment would decrease by 70 percent. E. Saltzman & C. Eibner, The Effect of Eliminating the Affordable Care Act’s Tax Credits in Federally Facilitated Marketplaces (2015). Another study predicts that premiums would increase by 35 percent and enrollment would decrease by 69 percent. L. Blumberg, M. Buettgens, & J. Holahan, The Implications of a Supreme Court Finding for the Plaintiff in King vs. Burwell: 8.2 Million More Uninsured and 35% Higher Premiums (2015). And those effects would not be limited to individuals who purchase insurance on the Exchanges. Because the Act requires insurers to treat the entire individual market as a single risk pool, 42 U. S. C. §18032(c)(1), premiums outside the Exchange would rise along with those inside the Exchange. Brief for Bipartisan Economic Scholars as Amici Curiae 11–12.
It is implausible that Congress meant the Act to operate in this manner. See National Federation of Independent Business v. Sebelius, 567 U. S. ___, ___ (2012) (Scalia, Kennedy, Thomas, and Alito, Jj., dissenting) (slip op., at 60) ("Without the federal subsidies . . . the exchanges would not operate as Congress intended and may not operate at all.”). Congress made the guaranteed issue and community rating requirements applicable in every State
