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Since 1992, GAO has published long-term fiscal simulations of what might happen to federal deficits and debt levels under varying policy assumptions. GAO developed its long-term model in response to a bipartisan request from Members of Congress who were concerned about the long-term effects of fiscal policy. GAO's simulations were updated with new estimates for Social Security and Medicare spending. GAO also modified its alternative simulation so that Medicare spending follows a more realistic path and revenues return to historical levels. GAO updates its simulations three times a year as new estimates become available from CBO's Budget and Economic Outlook (January), Social Security and Medicare Trustees Reports (spring), and CBO's Budget and Economic Outlook: An Update (late summer). This product responds to congressional interest in receiving updated simulation results.

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