The United States is approaching another debt-ceiling confrontation. On Monday, Treasury Secretary Janet Yellen warned Congress that the federal government could become unable to satisfy all of its obligations as early as 1 June unless lawmakers raise or suspend the statutory debt limit. President Joe Biden and congressional leaders are due to negotiate this week, but their positions remain far apart. House Republicans have passed legislation raising the ceiling while demanding substantial spending restraints, whereas Biden argues that Congress should authorise payment of existing obligations without attaching conditions and negotiate future fiscal policy through the normal budget process.
The terminology makes this debate unnecessarily confusing because the debt ceiling does not determine how much the government decides to spend in the first place. Congress separately passes legislation establishing expenditure and taxation. When authorised expenditure exceeds revenue, the Treasury finances the resulting deficit through borrowing. The debt ceiling then places an additional statutory limit on how much debt can be issued. Congress can therefore legally instruct the government to spend money, refuse to collect enough taxes to finance that spending and subsequently prevent the Treasury from borrowing the difference. The contradiction is institutional rather than mathematical.
This distinction matters because debates over the debt ceiling are frequently presented as though one side wants unlimited borrowing while the other wants fiscal responsibility. The United States does face a genuine long-term fiscal challenge. Federal debt is large, ageing will increase expenditure on Social Security and Medicare, interest costs are rising as rates increase, and persistent structural deficits cannot be treated as irrelevant simply because the United States issues the world’s principal reserve currency. Republicans are therefore correct that the trajectory of expenditure and revenue deserves serious political attention.
But whether America should incur an obligation and whether America should honour an obligation already incurred are different questions. Imagine someone purchases a house using a mortgage and subsequently concludes that their household has been spending too much. Reducing future expenditure would be rational. Refusing next month’s mortgage payment would not constitute a credible fiscal reform. It would damage the household’s creditworthiness while leaving the underlying spending problem unresolved.
The debt ceiling creates something resembling that second situation. Congress has already authorised programmes, salaries, benefits and other obligations. Raising the borrowing limit does not itself approve a new spending programme; it allows the Treasury to finance commitments generated by previous fiscal decisions. If lawmakers want smaller future deficits, the durable mechanisms are lower spending, higher revenue or some combination of both. Preventing the government from financing obligations after they exist changes the credibility of repayment rather than directly solving the fiscal imbalance.
This is why the distinction between solvency and liquidity is useful. The United States possesses an enormous economy, substantial tax capacity and the ability to issue debt denominated in its own currency. The current danger is not that the country has suddenly become economically incapable of generating resources sufficient to service its debt. The immediate danger is that political institutions could legally restrict the Treasury’s ability to use those resources and borrowing mechanisms in time.
That makes a potential American default unusually strange. Sovereign defaults normally occur because governments lack sufficient resources, foreign currency or market access. Sri Lanka’s crisis last year was a genuine external-financing crisis: foreign-exchange reserves became insufficient to service debt and finance essential imports. The United States could instead create a crisis through institutional self-restraint imposed at precisely the wrong point in the fiscal process.
Markets care about this because government debt depends fundamentally on credibility. US Treasury securities occupy a special position in the global financial system. Banks, pension funds, central banks and investors hold Treasuries partly because the probability of non-payment is considered extremely low. Their yields therefore help establish benchmarks used throughout global finance. The economic value of American government debt is not simply that the United States is rich; it is that investors expect its institutions to honour obligations predictably.
That credibility reduces borrowing costs. Investors generally demand higher interest rates when they perceive greater risk because they need compensation for the possibility of delayed or missing payments. Even a small increase in the risk premium attached to US debt could therefore increase interest costs across an enormous stock of government borrowing. Political brinkmanship can impose fiscal costs even if Congress eventually raises the ceiling before an actual default.
This creates an irony. Legislators using the debt ceiling because they want to reduce the government’s fiscal burden could increase that burden by making American debt appear marginally riskier. If investors demand higher yields, the Treasury pays more interest. More interest expenditure then increases future deficits, making fiscal consolidation harder.
Credibility is therefore an economic asset with a measurable price.
The same principle appeared during Britain’s mini-budget crisis last September. Liz Truss’s government possessed legal authority to cut taxes, but it could not order investors to finance the resulting borrowing cheaply. Markets reassessed British fiscal credibility and government borrowing costs rose sharply. The American situation is different because investors are not primarily questioning whether the United States possesses sufficient economic capacity. They are being asked to evaluate whether political polarisation could interfere with repayment despite that capacity.
Political risk becomes financial risk.
The Republican strategy nevertheless has an understandable institutional logic. The debt ceiling creates leverage precisely because failing to raise it would be extremely costly. If House Republicans simply demand spending reductions during ordinary budget negotiations, Biden can refuse. By connecting fiscal demands to a deadline the president cannot easily ignore, Republicans increase their bargaining power.
This is a version of brinkmanship. Thomas Schelling described coercive bargaining as manipulating the risk of an outcome both sides would prefer to avoid. The objective is not necessarily to cause catastrophe. It is to convince the opponent that unless they concede, catastrophe becomes sufficiently possible that refusing the demand is no longer worthwhile.
The problem is that brinkmanship works only when the threat is credible. If Biden knows Republicans will certainly raise the ceiling at the final moment, he has less reason to concede. Republicans therefore need to convince the White House that at least some probability of failure exists. But creating that probability is exactly what can alarm financial markets.
Effective bargaining therefore requires producing enough danger to influence the opponent without producing enough danger to trigger the outcome nobody wants.
That is a dangerous equilibrium when the asset being risked is sovereign creditworthiness.
The game also contains a collective-action problem inside Congress. Individual legislators can take uncompromising positions because each controls only one vote. If the deadline is missed, no single representative causes the default alone. Responsibility is distributed across hundreds of politicians, parties and institutions. Yet financial markets experience the aggregate result.
Distributed political responsibility can therefore produce concentrated economic consequences.
Polarisation makes this worse because compromise itself can carry electoral costs. A Republican legislator representing a strongly conservative district may fear a primary challenge if they vote for a debt-ceiling increase without substantial spending reductions. A Democrat may face criticism for accepting cuts to social programmes. The national interest may favour compromise while each individual politician’s electoral incentives favour holding out.
This is a classic collective-action problem: individually rational strategies can produce a collectively irrational outcome.
The United States’ primary-election system can intensify that mechanism because many congressional districts are electorally safe for one party. In those seats, the most important electoral threat comes not from the opposing party in the general election but from a more ideological challenger in the primary. Politicians therefore have incentives to demonstrate partisan commitment even when national bargaining requires compromise.
Institutional design affects fiscal outcomes.
There is also a constitutional peculiarity here. The Fourteenth Amendment states that the validity of the public debt of the United States “shall not be questioned”. Some legal scholars argue that this could provide constitutional grounds for the executive to continue borrowing despite the statutory ceiling rather than default on obligations Congress has already authorised. Others reject that interpretation and warn that unilateral borrowing would create its own constitutional crisis.
The fact that such arguments are becoming politically relevant demonstrates how strange the debt-ceiling mechanism is. The executive may eventually face several incompatible legal obligations: Congress has ordered expenditure, tax revenues are insufficient, Congress has limited borrowing, and the Constitution may prohibit questioning public debt. There may be no option that satisfies every instruction simultaneously.
Good institutional design should avoid forcing governments into impossible legal triangles.
This does not mean abolishing every fiscal constraint. Governments need mechanisms preventing short-term political incentives from producing unsustainable long-term borrowing. Fiscal rules can improve credibility when they constrain the decisions that create deficits in the first place. Expenditure ceilings, debt targets, independent fiscal councils or procedural requirements can all influence policy before commitments are made.
A borrowing ceiling applied after commitments exist is different. It constrains the financing mechanism rather than the underlying fiscal decision. This is why many economists consider the American debt ceiling a particularly inefficient form of fiscal discipline.
The deeper issue is time consistency. If Congress wants to restrain spending, it should make that choice when voting on spending. If it wants lower deficits, it should decide simultaneously which programmes to reduce or which taxes to increase. Postponing the confrontation until the Treasury needs to finance the resulting deficit allows politicians to support benefits initially and then perform fiscal restraint later.
That can blur accountability.
Voters reasonably like public programmes and low taxes. Politicians therefore have incentives to promise both. Debt absorbs the contradiction temporarily. The debt ceiling then becomes a dramatic moment in which everyone declares concern about borrowing without necessarily acknowledging which previous decisions created it.
Fiscal politics would become more transparent if every demand for deficit reduction identified the distributional consequences directly.
Which expenditure falls?
Whose taxes rise?
Which benefits change?
Those are politically difficult questions because every fiscal adjustment has a constituency.
This is why broad statements about “cutting spending” often become less popular when converted into specific programmes. Citizens can simultaneously believe government spends too much in aggregate and oppose reductions to Social Security, Medicare, defence, infrastructure or other programmes they value.
Aggregate fiscal preferences can therefore be internally inconsistent.
Democracy does not automatically resolve budget constraints because voters themselves can prefer combinations that cannot persist indefinitely.
Politicians then mediate the contradiction.
The American fiscal challenge is consequently real even if the debt ceiling is a poor mechanism for addressing it. Ageing will increase pressure on major entitlement programmes, while rising interest rates make debt service more expensive. Neither party has found it politically easy to present voters with the full trade-offs required for long-term stabilisation.
Republicans frequently emphasise spending but face strong incentives not to cut politically popular benefits. Democrats defend social programmes while remaining cautious about tax increases extending beyond wealthier households. Defence spending receives substantial bipartisan support. Interest payments cannot simply be legislated away.
The arithmetic therefore survives every political slogan.
A serious fiscal settlement will eventually require deciding how much government Americans want and how much taxation they are willing to pay for it. That is a normal democratic argument. Threatening default may actually make the argument harder by turning attention from the structural budget problem towards an artificial immediate crisis.
There is also an international externality. Because the dollar and US Treasury securities play central roles in global finance, an American political crisis does not remain entirely American. Foreign central banks hold Treasuries as reserves. International banks use them as collateral. Global investors treat them as safe assets. Uncertainty over American repayment therefore affects institutions whose citizens have no vote in Congress.
This is a peculiar consequence of monetary power. The United States receives substantial advantages from issuing the world’s dominant reserve currency and from the global demand for Treasury securities. That privilege creates responsibilities because domestic political decisions can generate international financial spillovers.
Sovereignty allows Congress to design American fiscal institutions.
Interdependence means foreigners bear some consequences when those institutions malfunction.
This resembles the climate problem in reverse. Climate emissions produced domestically create external costs globally. American financial instability can do the same through international capital markets. Globalisation therefore repeatedly produces situations where national democratic authority controls decisions whose effects extend beyond the national electorate.
There is no simple democratic solution because foreign Treasury holders obviously cannot vote in American elections. The practical constraint comes through markets: if political risk becomes sufficiently persistent, investors can diversify towards other assets.
The dollar’s position is too deeply embedded to disappear because of one debt-ceiling confrontation, and predictions that a single crisis will suddenly end dollar dominance are exaggerated. Reserve-currency systems depend on market depth, liquidity, legal institutions, economic size and network effects. Alternatives also have weaknesses.
But institutional advantages can erode gradually.
A country does not need to lose reserve-currency status completely before paying a price for making its debt marginally less attractive.
This is another reason credibility should be treated as accumulated capital rather than an inexhaustible resource.
America has spent more than two centuries developing institutions and markets that allow the federal government to borrow enormous amounts at relatively favourable rates. Each confrontation asks investors to believe that political actors will ultimately step away from the edge.
So far, they always have.
That history can create complacency.
If every previous game of chicken ended safely, participants may conclude the next one is safe too. But repeated success does not reduce the underlying consequence of failure. It can instead encourage actors to take greater risks because they expect someone else to swerve.
This is moral hazard in political bargaining.
The belief that Congress will always resolve the crisis at the last moment makes brinkmanship appear cheaper, which encourages more brinkmanship. Eventually the safety record itself can increase risk.
The objective should therefore be changing the institution before a future confrontation produces an accident.
The United States needs a serious debate about debt. It needs long-term fiscal planning, credible forecasts and political willingness to confront the costs of ageing and persistent deficits. None of that requires threatening whether obligations already created will be honoured.
Fiscal responsibility should mean deciding responsibly what the state promises.
Creditworthiness means keeping the promises once made.
Those principles reinforce one another when institutions are designed well.
The debt ceiling currently places them in conflict.
That is why the coming weeks should not be interpreted as a simple struggle between people who care about debt and people who do not. The more important distinction is between using the budget process to determine future fiscal policy and using sovereign creditworthiness as leverage over that process.
America can afford to pay the obligations currently coming due. The immediate uncertainty is whether its political institutions will allow it to do so.
For the world’s largest economy, that is an unusually avoidable risk.
