A nation does not need to lose a battle to look weak. Sometimes it only needs to miss a paycheck.

Washington often treats budget shutdowns as partisan spectacle, but America’s adversaries see something far more useful: a live demonstration of self-inflicted fragility. When the federal government allows frontline security personnel to work unpaid it interrupts critical security and health functions and publicly advertises institutional dysfunction. It weakens more than morale, it weakens deterrence. That is the real national security cost of a prolonged budget lapse.

Deterrence rests on more than missiles, submarines, and strategic doctrine. It also depends on the visible reliability of state capacity. Allies and adversaries alike measure whether the U.S. can sustain operations under pressure, protect its population, and maintain continuity during disruption. A shutdown tells them the opposite. It signals that even absent enemy action; the U.S. is willing to degrade its own readiness through political dysfunction. Even short lapses in appropriations disrupt defense planning, contract execution, and the broader machinery that underwrites operational readiness.

The most immediate damage appears in aviation security. The Transportation Security Administration (TSA) is not simply a travel inconvenience buffer. It is part of the nation’s daily homeland defense posture. Every checkpoint, screening lane, and visible officer contributes to deterrence by signaling that attacks or probes are likely to be detected and disrupted. That visible consistency matters because deterrence at the tactical level often begins with routine friction imposed on hostile actors.

Friction weakens when the workforce begins to crack. More than 460 TSA officers have already quit during the current standoff, while absentee rates have climbed to 10 to 11 percent nationally. Repeated funding disruptions are damaging morale, retention, and long-term staffing stability across the Department of Homeland Security. That is not merely a workforce problem. It is a deterrence problem.

Fatigue measurably degrades visual search performance, which is directly relevant to screening-intensive environments such as aviation security. TSA screening is not just procedural. It is cognitive work performed under repetitive, high-stakes conditions. When officers are exhausted, financially strained, or distracted by uncertainty, the quality of that work can decline even if the checkpoint remains technically operational.

Equally important, deterrence at the checkpoint depends not only on actual performance but on what potential attackers believe about the system. Airport security screening is perceived as a stronger deterrent when it appears visible, universal, and credible. That matters because deterrence is partly psychological. A security system that appears chaotic, understaffed, and politically neglected may still function, but it no longer projects the same confidence.

This erosion has consequences beyond the checkpoint itself. Long lines spilling into terminal lobbies and pre-screening corridors create soft-target conditions that sophisticated attackers have historically exploited overseas. U.S. airports have warned Congress that the current operational strain is serious, worsening, and potentially long-lasting. In practical terms, a shutdown does not just reduce security throughput. It redistributes risk into large, dense, unsecured public spaces and creates opportunity.

More troubling still is that recurring shutdowns create patterns. Adversaries watch for patterns. If hostile actors can reliably anticipate periods when U.S. aviation security is underpaid, understaffed, and politically distracted, then Washington has unintentionally handed them a calendar of vulnerability. Strategic competitors, transnational terrorist networks, and opportunistic lone actors all benefit when a defender repeatedly broadcasts when its systems are under stress.

The same logic applies beyond airports. Health security is often treated separately from deterrence, but that is a categorical error. In an era defined by pandemics, synthetic biology, fragile supply chains, and the weaponization of disruption, public health capacity is national security capacity. A country that cannot sustain surveillance, biodefense coordination, and health system continuity under fiscal pressure is not demonstrating resilience. It demonstrates exploitable weaknesses.

That is precisely why the shutdown’s impact on the Department of Health and Human Services (HHS) should concern strategists as much as its effect on TSA. HHS’s own FY 2026 contingency staffing plan states that 23,128 employees, roughly 31 percent of its workforce, would be furloughed during a lapse in appropriations. The plan further notes that numerous non-excepted functions would be paused or curtailed, including elements of grant oversight, data collection, validation, analysis, and portions of public communication. That may sound bureaucratic, but it is not.

Health system functions form the connective tissue of national preparedness. Surveillance, analytics, research oversight, and continuity of clinical and administrative operations are what allow the U.S. to detect biological threats early, understand cascading risks, and sustain resilience under stress. Public health emergency management is foundational to biodefense capacity, particularly in areas such as interagency coordination, situational awareness, testing, surveillance, and surge resilience. When those systems are interrupted, the country does not simply lose paperwork, it loses awareness, agility, and recovery capacity.

This point is reinforced by broader preparedness of scholarship. Public health emergency preparedness in the U.S. has long suffered from uneven and declining support, leaving critical state and local response systems more vulnerable to disruption. In deterrence terms, disruptions lower the cost for an adversary seeking to exploit a biological event, amplify public panic, or overload institutional response capacity.

System disruption and deterrence is where budget shutdowns become strategically self-defeating. The U.S. invests heavily in advanced military capability, but periodically undermining the civilian systems that make that capability credible is defeatist. No adversary needs to destroy American resilience if Washington is willing to suspend parts of it on its own. That contradiction sends a damaging signal to both allies and competitors.

For adversaries such as China and Russia, recurring shutdowns offer a useful strategic readout. They reveal domestic political brittleness, weak continuity discipline, and a governing system vulnerable to self-imposed paralysis. That does not automatically invite direct confrontation, but it does encourage gray-zone opportunism. Cyber probing, disinformation, infrastructure stress campaigns, and strategic influence operations all become more attractive when the target appears distracted and internally divided. Shutdowns are self-inflicted wounds. In a deterrence environment, self-inflicted wounds are still wounds.

For U.S. allies, the signal is quieter but equally corrosive. Extended deterrence relies not only on military capability but also in the confidence of American competence and continuity. Partners want to know that the U.S. can manage crises at home while sustaining commitments abroad. A federal government that struggles to keep airport screening and health preparedness stable during a budget fight risk is undermining that confidence at exactly the wrong moment.

For these reasons, shutdowns should no longer be treated as routine political leverage when they affect core homeland security and resilience institutions. Congress should establish automatic continuing resolution mechanisms for agencies and functions that are central to deterrence. This includes transportation security, emergency preparedness, biodefense, and public health surveillance. Political disagreement is unavoidable; however, institutional self-sabotage is not.

Deterrence is often discussed in the language of force posture, strategic messaging, and escalation dominance. This all matters. Yet, deterrence lives in the ordinary machinery of a functioning state: an airport screening lane that stays open, a health surveillance system that keeps collecting data, and a workforce that knows the government will not ask it to defend the nation for free. When that machinery stalls, deterrence does not collapse overnight. It thins. It flickers. It becomes easier to stress. That is the danger of a shutdown. It does not merely interrupt government. It advertises vulnerability.

Brandon Toliver is a Senior Fellow at the National Institute for Deterrence Studies. The views of the author are his own.

Deterrence on Layaway: A Shutdown’s Quiet Assault on American Security was originally published on Global Security Review.

A Nuanced Continuity

Harris’ approach to nuclear deterrence will likely continue the multilateral strategy that characterizes the Biden administration. As vice president, she demonstrated a deep commitment to international alliances and a keen understanding of national security. This suggests that a Harris administration will maintain a strong nuclear deterrent as a cornerstone of national defense, while also advocating for arms control and nonproliferation efforts.

Additionally, a Harris administration will benefit from a seasoned foreign policy team. Her national security advisor, Phil Gordon, and his deputy, Rebecca Lissner, are experienced Washington hands who advocate for a balanced approach to American leadership. Their influence will likely steer Harris towards policies that emphasize deterrence without escalation and maintaining a credible nuclear arsenal while pursuing arms reductions.

Modernization with a Purpose

The Biden-Harris administration supports nuclear modernization as a component of national security. This includes updating existing systems and ensuring that the nuclear triad’s land-based missiles, submarine-launched ballistic missiles, and strategic bombers remain effective and secure. Modernization efforts are aimed at addressing the evolving threats posed by adversaries such as China and Russia, who are investing in advanced nuclear capabilities.

Additionally, during her tenure as a senator, Harris endorsed the importance of maintaining a credible nuclear deterrent to prevent adversaries from exploiting perceived weaknesses. Her support for modernization reflects a recognition that technological advancements and evolving geopolitical dynamics necessitate a reliable and secure nuclear arsenal. This perspective aligns with her broader commitment to national defense and security.

Generational Shift in Perspective

Kamala Harris represents a generational shift. Unlike her predecessors, she brings a globalized outlook shaped by her immigrant heritage and diverse experiences. This worldview is likely to influence her approach to nuclear policy, emphasizing the interconnectedness of global security. Harris has frequently spoken about the importance of addressing modern threats such as climate change and human rights, which she sees as intertwined with traditional security concerns. This broader perspective could lead to a more integrated approach to deterrence, considering a wider array of factors influencing global stability.

Engagement with Allies

Harris’s extensive engagement with international partners signals a strong commitment to collective security. Her active participation in high-profile international summits, such as the Munich Security Conference, Asia-Pacific Economic Cooperation (APEC), Association of Southeast Asian Nations (ASEAN) Summit, and the Conference of Paris (COP) climate summit in Dubai, underscores her belief in the power of alliances and multilateral cooperation. Harris has also demonstrated unwavering support for Ukraine in the face of Russian aggression, reflecting her dedication to upholding international norms and supporting allies under threat.

Under her leadership, the US is likely to continue strengthening NATO and other strategic partnerships—presenting a unified front against nuclear threats. Harris’ approach would emphasize the importance of solidarity among allies to ensure that deterrence strategies are robust and effective. Her support for multilateralism suggests she will work closely with allies to enhance deterrence capabilities, sharing intelligence and coordinating military strategies to address potential nuclear challenges.

Moreover, Harris’ experience on the Intelligence and Homeland Security Committees, combined with her background as a prosecutor, equips her with the skills to navigate complex security issues and engage in rigorous policy discussions. This expertise is instrumental in developing nuanced and comprehensive approaches to nuclear deterrence, ensuring that the US and its allies are well-prepared to counter any threats.

Strategic Restraint and Humanitarian Concerns

Harris’ stance on Israel and Gaza underscores her readiness to challenge established policies when humanitarian concerns are prominent. This approach reflects a broader principle that could significantly impact her handling of American nuclear deterrence. Harris’ sensitivity to the human costs of conflict suggests a preference for strategies that go beyond military force. Harris’ focus on humanitarian issues and her critical stance on the conduct of international conflicts indicate that she will prioritize the development of policies that not only ensure national security but also reflect ethical considerations.

Policy Evolution and Public Sentiment

Harris’ approach to nuclear deterrence will also reflect evolving public sentiment, particularly among younger Americans who prioritize issues like climate change and human rights. This demographic shift indicates a growing preference for a security strategy that integrates traditional defense measures with contemporary global challenges.

Her administration could leverage this support to advance comprehensive security policies that address both traditional and emerging threats. This means not only maintaining a credible nuclear deterrent to deter adversaries but also incorporating measures to combat climate change, promote human rights, and address cyber threats. By doing so, Harris can appeal to a new generation of Americans who demand a more holistic and forward-thinking approach to national and global security.

Conclusion

A Kamala Harris presidency may be positioned well to navigate the complexities of nuclear deterrence with a blend of strategic continuity and innovative evolution. Harris’ experience and commitment to multilateralism suggests a firm dedication to maintaining a credible and secure nuclear arsenal while actively pursuing arms control and nonproliferation efforts. Her support for nuclear modernization underscores the necessity of a reliable deterrent in the face of evolving global threats, reflecting a pragmatic approach to national security.

At the same time, Harris offers a generational shift in perspective and emphasis on global interconnectedness. Her focus on integrating humanitarian concerns, strategic restraint, and diplomatic engagement could lead to a more balanced and ethical approach to deterrence. This perspective aligns with her commitment to addressing contemporary global challenges, such as climate change and human rights.

Harris’ extensive international engagement and support for multilateral cooperation highlight her belief in the power of alliances to bolster deterrence and manage nuclear risks. Her administration will likely continue to strengthen NATO and other strategic partners—ensuring that American nuclear policy is both robust and cooperative.

As public sentiment evolves, particularly among younger generations who prioritize a holistic security strategy, Harris’ approach may resonate strongly with voters. By integrating traditional defense measures with contemporary priorities, her presidency may offer a nuanced and forward-thinking approach to nuclear deterrence, addressing both immediate security needs and long-term global stability.

Aaron Holland is a PhD candidate at the University of Utah and an analyst at the National Institute for Deterrence Studies. Views expressed are the author’s own. 

What a Kamala Harris Presidency Means for Deterrence was originally published on Global Security Review.