The semiconductor supply chain should be prioritized as a national security interest

What's this about?

People disagree about whether chips should count as a top safety need for the country. These tiny parts support defense, power, health care, phones, cars, and many other key services.

What supporters say

• Public leaders need to plan together because one company cannot fix every chip supply risk alone.
• A chip shortage can spread from one field into cars, power, health care, and other key services.
• Military tools need many chips, so a shortage could slow the making of weapons.
• Chip making centers in a few places, so war, threats, or a blocked route could cut off supplies.

What critics say

• Chip safety matters, but that does not prove the government should give broad money aid to chip firms.
• Safety plans may fail if leaders do not set clear goals and check if the plans work.
• Making every chip at home could cost more and leave the country less able to handle shocks.

How to read this

The number of points on each side does not show who is right; the strength of the proof matters more.

The bottom line

The facts support treating chip supplies as a national safety need. They favor focused plans, shared work, and backup suppliers, not huge aid for every firm or making every chip at home.

The claim is that semiconductor supply-chain resilience should be treated as a national-security priority, not only as an industrial or commercial issue. The evidence supports that priority, but favors targeted resilience and cooperation over blanket subsidies or complete domestic self-sufficiency.

The case for

Modern defense systems rely on semiconductors, making supply interruptions a potential limit on military production rather than merely a business problem. The Government Accountability Office found that defense contractors identified chips as a major production constraint, and that some weapons systems require hundreds of them. Mature chips, not just the most advanced processors, are also important for defense, communications, medical devices and critical infrastructure. 1 (see Figure 1; see Figure 2)

The supply chain is also geographically concentrated and exposed to geopolitical risk. Specialized manufacturing, packaging, equipment and materials are spread across several countries but clustered in strategically important parts of the Indo-Pacific. RAND has examined scenarios involving Taiwan in which conflict, coercion or a blockade could disrupt companies that depend on Taiwanese production. 2 (see Figure 3)

Recent shortages show that this danger is not purely hypothetical. A peer-reviewed study found that the COVID-19 chip shortage spread through the closely connected automotive industry and caused prolonged disruption downstream. Government assessments also identify semiconductors as essential to power electronics, data centers, electric-grid stability, industrial equipment, communications, medical devices and energy systems. 3

Because these industries depend on one another, individual companies cannot manage every risk alone. Research reviews identify recurring weaknesses involving shortages, unpredictable demand, intellectual property, new technologies and supplier concentration. They conclude that resilience requires coordination across chip design, manufacturing, packaging, equipment, materials, research, information-sharing and skilled labor. That gives government a legitimate coordinating role. 4

The case against

National-security importance does not automatically justify broad subsidies, blanket reshoring or a drive for complete self-sufficiency. Peterson Institute research documents subsidy competition linked to the CHIPS Act, while analyses from Harvard and the Tax Foundation point to legal, institutional, fiscal and economic-efficiency problems that could reduce the security benefits of poorly targeted programs. 5

The industry depends on international specialization. Restricting access to foreign suppliers may reduce reliance on countries considered risky, but it can also cut companies off from complementary skills and technologies. CSIS’s analysis of CHIPS Act sourcing rules describes a tradeoff between reducing strategic dependence and preserving competitiveness. Duplicating capacity or narrowing the supplier base could impose costs that ultimately make the system less resilient. 6

There is also a risk that security programs become symbolic or politically driven. Government Accountability Office reviews recognize the possible national-security value of CHIPS-funded projects, but raise questions about commercial viability, the programs’ precise objectives and how officials will measure whether proposed safeguards actually reduce risk. Without clear targets, money could be spent on capacity that does not address the most serious vulnerabilities. 7

The evidence is strongest on the existence of exposure and the consequences of disruption. It is less conclusive on how much any particular subsidy, restriction, stockpile or allied-diversification plan would reduce the chance or impact of a security crisis. The cited research does not offer one comparison of the full security benefits and economic costs of all these options, and unresolved conflicts of interest also warrant caution.

The bottom line

The evidence moderately supports making semiconductor supply-chain resilience a national-security priority. The case is strongest for recognizing that chips are essential to defense and critical civilian systems, that production is geographically concentrated and that disruptions can spread widely.

But the evidence supports targeted, measurable and internationally coordinated action more strongly than broad subsidies or autarky. A sensible approach would combine allied diversification, trusted suppliers, strategic inventories, workforce training, research, information-sharing and carefully targeted production. Policymakers should distinguish genuinely security-critical vulnerabilities from ordinary commercial concerns and measure whether each intervention reduces a consequential risk.

Confidence is moderate: the threat is well established, while the effectiveness, cost and implementation risks of particular policy tools remain less certain.