That time the CBO was off by $200 billion

February 21

The Congressional Budget Office does solid work. Its nonpartisan findings and estimates can make or break legislation on Capitol Hill.

But economic conditions change, and it's important to keep in mind that when Doug Elmendorf, the CBO's director, testifies before the House Budget Committee, you're hearing estimates, not certain projections.

Here are a few other things to remember:

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Chris Cillizza | February 21