On Balance: What’s the Score? The Congressional Budget Office and its Role in the Policy Process
The Congressional Budget Office (CBO) plays an important role in the federal legislative process. CBO’s score on a given bill—that is, its estimate of how it would affect the federal budget deficit—can determine whether Congress decides to go forward with the bill, modify it to get a more favorable estimate, or simply drop it. Given their importance, debates over CBO’s scores and the methods they use to produce them can be as controversial as the bills that are being considered. While this controversy can be politically motivated (with advocates on either side of an issue arguing for a score that is more favorable to their position), it also stems from limited understanding of CBO’s intended role in the process—and reflects the difficulty of conducting analyses of benefits and costs in the context of policy decisions.
Because Congress wanted an objective scorekeeper to develop accurate budget estimates, it created CBO in the Congressional Budget and Impoundment Control Act of 1974. Among other functions, CBO is required by law to produce a formal cost estimate for nearly every bill that is approved by a full committee of either the House or the Senate. It also produces informal cost estimates for a much larger number of legislative proposals. This scorekeeping function has become more important over time. CBO’s Update to the Budget and Economic Outlook estimates the current federal budget deficit at almost $700 billion and projects it will more than double over the next decade, and Congress is acutely conscious of the budgetary implications of potential legislation.