
Article Highlights
- The assumptions that presidents make in budget proposals are important, they affect all the other calculations.
- If a president assumes growth will be high that will help justify spending increases or tax cuts.
- Most presidents assumed slightly more positive budget outcomes than the Congressional Budget Office.
The assumptions that presidents make in their budget proposals are certainly important. After all, they affect all the other calculations. If a president assumes growth will be high, that will give him lots of revenue to play with, helping him justify spending increases or tax cuts. So it’s more than a small technicality when a budget calls for much larger or smaller growth than the economy ends up experiencing.
In the case of Reagan, despite all the howling, the Rosy Scenario’s forecasts for 1983 through 1985 turned out to be much closer to actual economic growth than the CBO’s. Reagan’s economic team correctly anticipated growth effects from tax cuts. But today we have witnessed presidential budgets that have been as inconsistent with CBO forecasts as any in history. When one looks at GDP growth forecasts, or those for unemployment, there has never been a president and an economic team with the temerity to mislead as much as Obama and his advisers have done.
The nearby chart shows the average difference between the assumptions in the past five presidents’ budgets and the projections that the CBO made for the same years as those budgets. Since projections can be difficult to make for the more distant future, and we wanted to compare Obama’s record to actual history as well, we looked at predictions in each budget for the subsequent two years, for both GDP growth and unemployment. As the chart shows, most of the presidents, on average, assumed slightly more positive outcomes than the CBO, perhaps because of the desire to understate deficits. President Obama’s budgets, however, differed from the CBO’s projections in a much more dramatic way than those of any of the previous four presidents, and especially those of his two immediate predecessors.

They do this because they know that the mainstream media will let them get away with it. If a Republican disagrees with the CBO, it is malpractice.
If a Democrat does it, it’s not worth a mention.
Kevin Hassett is the director of economic policy studies at AEI.
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