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Measuring America’s chokepoints

Jordan Schneider cuts through the noise of endless supply chain reports with a blunt, necessary truth: throwing money at a broken industrial base does not fix it. The piece argues that the United States is suffering from a specific kind of economic blindness, where policymakers can fund a project but cannot physically execute it when crisis strikes. This is not just about semiconductors or rare earths; it is about the terrifying reality that in a modern conflict, capital is useless without the physical machinery to convert it into output.

The Illusion of Financial Power

Schneider opens with a stark historical anchor that reframes the current debate. He notes that "The United States stopped manufacturing its own TNT in 1986," leaving the military dependent on Russian and Ukrainian suppliers for decades. When the war in Ukraine began, the U.S. needed to surge 155mm artillery shell production from 14,500 rounds a month to over 100,000. Despite Congress appropriating nearly $5 billion, production has stalled at roughly 40,000 rounds per month.

Measuring America’s chokepoints

The author uses this failure to dismantle a common assumption in Washington. "Money is not a magic wand for manufacturing; in a crisis, you cannot simply legislate or spend your way out of the physical reality of industrial systems," Schneider writes. This observation lands with force because it contradicts the standard political playbook where budget increases are treated as immediate solutions. The bottleneck is not a lack of funds; it is the absence of the factories, the skilled workforce, and the chemical supply chains required to turn cash into shells.

This is a critical distinction for readers trying to understand why the U.S. struggles to mobilize. The article suggests that the current system is vulnerable precisely when surges are necessary: "a scenario where we have the capital to buy, but no physical mechanism to produce." Critics might argue that market forces will eventually fill these gaps, but the timeline for building heavy industry is measured in years, not quarters. By the time private capital responds, the strategic window may have closed.

The binding constraint (instead of money) was America's physical inability to produce the explosives, propellants, and shell casings at the required pace.

A Dashboard for Survival

Schneider proposes that the solution to this incoherence is a new set of metrics, modeled after the Federal Reserve's dual mandate of inflation and employment. He argues that without headline numbers, policy debates "fruitlessly devolve into competing lists of vulnerabilities" without a way to weigh tradeoffs. To fix this, he introduces two specific indices: the Chokepoint Exposure Index (CEI%) and Mobilization Elasticity (ME).

The first metric, CEI%, measures the percentage of U.S. GDP at risk from adversary-controlled supply chains. The second, ME, measures how quickly the U.S. can surge production of critical goods without causing economic collapse. Schneider explains that these two goals exist in "productive tension." Reshoring production to lower exposure is slow and expensive, often tying up capital that could be used to build surge capacity. Conversely, maintaining deep allied networks to ensure rapid mobilization means accepting higher dependency risks.

This framing is effective because it forces a difficult conversation about the limits of self-sufficiency. "The most direct way to cut chokepoint exposure (lower CEI%) is to reshore production," Schneider writes, "but reshoring is slow, expensive, and ties up capital for years in construction instead of surge tooling, workforce training, and standby capacity that would raise ME today." The author points out that aggressive reshoring can actually backfire; citing an OECD review, he notes that concentrating production in a single location can make economies more vulnerable to shocks than maintaining diverse allied sources.

The article draws a parallel to the 155mm artillery crisis, where the lack of a unified dashboard meant billions were spent on flagship semiconductor fabs while the Army could not produce enough shells for a single theater war. This highlights a systemic failure in resource allocation. The proposed metrics would force policymakers to answer the question: "for each critical input, what is the right mix of domestic production, allied diversification, stockpiling, and demand-side flexibility?"

Innovation vs. The Supply Chain

A natural instinct for national security is to prioritize technological leadership above all else. Schneider challenges this, arguing that while the U.S. spends heavily on research and development, the real vulnerability lies in the production layer. "The United States can design the world's most advanced chip but be unable to produce it without TSMC," he writes. Similarly, the country can invent breakthrough battery chemistry but remain entirely dependent on Chinese-processed rare earth magnets.

The author contends that innovation already has robust institutional support, from the Department of Defense to the National Science Foundation. The missing piece is the ability to manufacture at scale. "The core of economic security is the supply chain underneath it," Schneider asserts. This is a crucial pivot in the conversation, moving the focus from the brilliance of the invention to the grit of the industrial base required to deploy it.

To calculate these risks, Schneider details a complex methodology involving input-output tables and the Leontief inverse matrix, which captures how a disruption in one small input can cascade to shut down entire sectors. He notes that a chokepoint input might represent only 2% of a sector's costs, but losing it can stop 100% of downstream output. This mathematical rigor gives weight to the argument that small dependencies can have catastrophic consequences.

The short-run impact can be orders of magnitude larger than the long-run marginal effect described by Hulten's Theorem, because production is Leontief-like (requiring fixed proportions of inputs) before substitution kicks in.

The piece also addresses the human cost of these supply chain failures, though implicitly. The inability to produce 155mm shells is not just a logistical statistic; it translates directly into prolonged conflict and increased casualties on the battlefield. When the industrial base cannot surge, the war drags on, and the human toll accumulates. The article's focus on "mobilization elasticity" is, in essence, a metric for how quickly a nation can end a conflict by overwhelming an adversary with material, potentially saving lives by shortening the duration of violence.

Bottom Line

Schneider's strongest contribution is the reframing of economic security from a list of vulnerabilities to a dynamic tension between exposure and capacity. His argument that money cannot buy industrial readiness is a sobering reality check for a political class accustomed to solving problems with appropriations bills. The biggest vulnerability in the proposal is the political difficulty of accepting the tradeoffs: acknowledging that total self-sufficiency is impossible and that some dependency on allies is a necessary cost of rapid mobilization. As the U.S. faces an era of weaponized interdependence, the ability to measure these risks with clarity is the first step toward fixing them.

The U.S. remains vulnerable precisely when surges are necessary: a scenario where we have the capital to buy, but no physical mechanism to produce.

Deep Dives

Explore these related deep dives:

  • The Guns of August Amazon · Better World Books by Barbara W. Tuchman

    The definitive account of the first month of World War I and the failures of diplomacy.

  • Input–output model

    The article explicitly cites this economic framework as the mathematical foundation for calculating the 'Chokepoint Exposure Index,' explaining how it maps the interdependencies between raw materials and final defense outputs.

  • 155 mm caliber

    While the article mentions the shell caliber, this entry details the specific industrial bottlenecks in propellant chemistry and casing metallurgy that prevent the U.S. from scaling production despite available funding.

  • Mobilization

    This concept defines the specific 'Mobilization Elasticity' metric proposed in the essay, distinguishing between peacetime efficiency and the physical capacity to surge manufacturing during a crisis.

Sources

Measuring America’s chokepoints

by Jordan Schneider · ChinaTalk · Read full article

Earlier this year we launched an economic security contest. We had two prompts:

What are the most important high level KPIs that policy should aim for? What is the analogy of the Fed’s ‘2% inflation and full employment’ target for economic security?

Where today would you put $10-50bn to get the most for your investment in economic security? Feel free to propose both defensive and offensive ideas, and either a portfolio of ideas or the one large idea you think will deliver the most value.

Last week we ran our first essay winner.

Our second essay comes from Naveen Krishnan, a Belfer Young Leaders research fellow at Harvard with the Belfer Center for Science and International Affairs, where he specializes in artificial intelligence capabilities and U.S. national security policy. He is an intelligence officer in the U.S. Navy Reserve. His views are his own and do not represent those of the U.S. Navy or Harvard.

The United States stopped manufacturing its own TNT in 1986. For decades afterward, the Army bought its primary explosive fill from Russia and Ukraine. When one supplier invaded the other in February 2022, the Army needed to surge 155mm artillery shell production from 14,500 rounds per month to over 100,000. The binding constraint (instead of money) was America’s physical inability to produce the explosives, propellants, and shell casings at the required pace. Congress appropriated nearly $5 billion. But four years and billions of dollars later, production has reached only 40,000 rounds per month.

This is what an economic security failure looks like: the absence of the industrial base required to turn money into output under crisis conditions - regardless of how ‘urgently’ Congress pushes. Money is not a magic wand for manufacturing; in a crisis, you cannot simply legislate or spend your way out of the physical reality of industrial systems. The U.S. remains vulnerable precisely when surges are necessary: a scenario where we have the capital to buy, but no physical mechanism to produce.

Across the political spectrum, policymakers recognize this crisis and see that the U.S. government must take a more active role in securing the supply chains that underpin national power. Yet this activism lacks a dashboard. We have no headline numbers that tell policymakers whether the United States is becoming more secure or less secure, by how much, and where the gaps are. Policy debates fruitlessly devolve into competing lists of ...