"Using the same modeling techniques as CBO, the Urban Institute estimates that a Supreme Court decision against the Affordable Care Act would reduce federal spending by about $340 billion over 10 years.... The implications are enormous.... [A]ny legislation that seeks to restore the tax credits would be measured against this lower baseline. CBO would therefore score any legislation that fully restores the tax credits as increasing the federal budget deficit by roughly $340 billion over 10 years. Yet because the provisions of the Affordable Care Act that financed the coverage expansion would remain current law and endure as part of CBO's baseline, these financing sources would no longer be available to Congress."