On Monday, I took a shot at Sarah Palin after she wrote, "To suggest that raising the debt limit doesn't incur more debt is laughably absurd. The very reason why you raise the debt limit is so that you can incur more debt. Otherwise what's the point?" In a tweet, I noted, "No, you do it so you can pay the debt you accrued." That is, the government's debt is not created by the extension of borrowing authority; it is created when Congress establishes entitlements or passes spending bills that require government borrowing. If you sign a tuition contract with a college for your kid and need to take out a loan to cover all or part of it, you assume a debt when you enter into that agreement, not when you go to the bank and ask for an extended line of credit. Put another way, raising the debt ceiling does not change the amount of money the US government owes.
Nevertheless, a mass of conservative trolls rushed to Palin's defense and howled about my tweet. Looking for further edification on this matter that I could share with the Palinites, I sent her quote to Mark Zandi, the prominent economist who was one of the policy advisers to the McCain-Palin campaign in 2008, and asked him to evaluate it. Zandi, who is now chief economist of Moody's Analytics, emailed back with a bigger message:
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