The current estimate relies on updated baseline projections related to the federal costs of subsidizing health insurance. (cbo.gov)
This change appears to be structural: The 2013 baseline projection through 2040 by the Energy Information Administration of the U.S. Department of Energy forecasts that American» [e] nergy - related CO2 emissions [will] never get back to their 2005 level.» (nationalaffairs.com)
The cuts (plus the lack of commensurate budget reductions) would add $ 6 trillion more to the national debt relative to baseline projections. (fortune.com)