In its most recent polls, the IGM asked both panels whether the requirement to periodically increase the debt ceiling measurably reduces the long-run size of the debt. Overall, across both panels (and weighted by each expert’s confidence in their response), nearly three-quarters of panelists disagreed or strongly disagreed.
Among the minority who agreed, John Cochrane said, “It's popular to deny this, but in my view it has some effect. The regular budget process is completely broken. This is one deadline that forces some spending/tax compromises. Not as much as we might like, but would be worse without this last overall budget mechanism.” John Graham of Duke suggested, “The ceiling imposes some discipline . . . but in the end costs are not reduced too much via the debt ceiling process.” And Campbell Harvey proposed, “It is a constraint—but the constraint is usually not binding. We don't know what the debt would be today in the counterfactual (no debt limit). The US has a structural deficit. Why not develop a strategy to fix that rather than just focusing on raising the limit?”
David Autor of MIT also agreed, remarking: “I'm not endorsing the nuclear approach to deficits, but it seems plausible that Republicans’ ability to hold Democrat administrations hostage over the debt ceiling extracts some meaningful budget concessions. Republicans didn't use this power with Trump. Selective concern and hypocrisy abound.”
Among those who said they were uncertain, Daron Acemoglu stated, “There are both positive and negative effects, but overall it's a very inefficient way of managing public debt,” while Robert Shimer observed, “As is, the debt ceiling debates do have an impact on spending, as seen during the ‘fiscal cliff’ in 2013. But without a debt ceiling, those reductions might happen as part of normal budget negotiation.”
Among those who disagreed or strongly disagreed, Michelle Lowry of Drexel commented, “To this point, there is little evidence of such an effect. However, it seems that it might have a measurable effect in the future, if debt levels continue to increase.” Paola Sapienza of Northwestern added, “Hard to test it empirically but it does not look like.” Chicago Booth’s Steve Kaplan (who is a member of both panels) said, “Debt ceiling has not stopped US debt from growing to record levels.”
Two experts look back at past political tensions around the debt ceiling. Janice Eberly said, “Focus on fiscal issues is needed, but the debt ceiling is usually routinely raised and has not led to focused and lasting reductions in fiscal deficits. Moreover, concerns over political stalemate have the opposite effect, as with the volatility and downgrade in 2011.” And Jonathan Parker pointed out, “Historically, the debt ceiling has been raised each time we have hit it. It is hard to believe debt-to-GDP could have risen even more rapidly. And there are technical work-arounds (that we may yet use) that can allow debt to be issued without increasing its face value.”
Finally, some panelists expressed exasperation with the political process around the debt ceiling—and the potential costs for the country. Andrew Lo declared, “Periodically requiring Congress to engagement in brinksmanship has little bearing on fiscal responsibility. We should pay our bills.” Stijn Van Nieuwerburgh warned: “The debt ceiling has been turned into a political weapon that substitutes for sound budgetary policy-making. It risks eroding the convenience yields that the US has benefited from for decades and that would be very unhelpful to lose right now with debt/GDP near 100 percent.”
Kenneth Judd added, “The main effect in the past has been the silly political posturing that comes with these increases. The expectation has been that the debt ceiling has no real impact.” And Richard Thaler concluded, “It is a stupid rule that serves no useful purpose. I predict it will be solved in the last 24 hours of some deadline.”
All comments made by the experts are in the full survey results—for the economics panel, the finance panel, and the 2013 poll.