Will Trump invoke the Insurrection Act?
I assess a low but non-negligible chance that Trump will invoke the Insurrection Act through Jan 1, 2027 — roughly 15% — because the legal/political barriers are high even though the president’s rhetoric and crisis incentives raise tail risk.
Analysis
**Stage 1 — Blind analysis (ignore market price):**
*Legal framework and historical baseline.* The Insurrection Act is an extraordinary, rarely used statutory exception to Posse Comitatus that allows use of federal military forces to suppress insurrection or enforce federal law when civilian authorities cannot. Modern U.S. practice makes invocation rare: notable uses include Eisenhower in Little Rock (1957) and Bush in Los Angeles (1992). Since invocation creates immediate legal and political fights, presidents have historically preferred alternatives (National Guard under state control, DHS/federal law enforcement, or Title 10/Troop support short of law enforcement). The institutional barriers are meaningful: the Pentagon historically resists political use of active-duty forces for domestic political purposes; governors can oppose; courts and Congress can and will litigate and legislate after the fact.
*Executive incentives and temperament.* President Trump’s past rhetoric and behavior indicate willingness to contemplate aggressive measures to control borders, protests, or unrest, and he has previously deployed troops to the border under other authorities. That temperament raises the tail risk that he would consider invoking the Act in a perceived existential domestic crisis or sustained, multi-jurisdictional unrest.
*Plausible triggers for invocation within the period.* The most plausible real-world triggers are (1) an acute, geographically widespread outbreak of violent unrest that state authorities are demonstrably unable/unwilling to control; (2) a severe border crisis framed as a national emergency with states refusing cooperation; or (3) some politically charged standoff where governors or state actors actively defy federal orders. Even then, the administration would likely try less escalatory tools first (federal law enforcement surge, National Guard under state governors, or Title 32/Title 10 limited missions).
*Probability synthesis (blind):* Balancing Trump’s demonstrated willingness to use forceful rhetoric and past deployments against the weight of institutional resistance, legal exposure, and political cost, I place an independent probability of **~15%** that he will invoke the Insurrection Act by Jan 1, 2027. This reflects a small but non-trivial chance driven by low-probability, high-impact triggers (large-scale, multisite unrest or an acute border collapse) combined with the president’s incentive to act decisively in crises.
**Stage 2 — Market calibration (after seeing current price Yes=0.20):**
The market currently prices a 20% chance. My independent estimate of 15% is moderately below the market. Reasons the market may be slightly elevated:
- *Tail-risk demand and narrative risk:* Traders buy insurance against politically explosive scenarios (and the media attention around Trump makes such events salient), pushing prices up beyond objective baseline probability. - *Event horizon ambiguity:* Some participants may be pricing a longer horizon (through 2029) or conflating any military/domestic troop use with invocation of the Insurrection Act; that inflates the Yes side relative to the true legal invocation probability by Jan 1, 2027. - *High-volume hedging:* With ~511k contracts, institutional players hedging other political exposures could bid the Yes side for portfolio reasons.
Why a small premium might be justified: the market may rationally price in the disproportionate impact of sudden large shocks (mass unrest, border crises) that are inherently difficult to forecast and which would plausibly push the probability into the 20–30% range if they occur. Still, absent such a shock already underway, a 20% price seems a modest overpricing relative to institutional and legal frictions that typically prevent invocation.
In short: I view the market as slightly optimistic about the near-term chance of invocation; if new credible signals appear (formal memos, DoD posture changes, state refusals, or sustained violent unrest) the market move toward 20%+ would be warranted and I would re-evaluate upward.
Arguments
For
- President Trump’s prior rhetoric and history of using forceful executive options create a meaningful tail risk that he would authorize extraordinary measures if he perceives a severe domestic threat.
- If there is sustained, violent unrest across multiple states or an abrupt, unmanageable border crisis, the political incentives to demonstrate decisive federal action increase, making invocation more likely.
- Use of the Act can be framed to the president's base as restoring order quickly — a domestic political payoff that could outweigh the predicted institutional backlash in the short term.
Against
- High institutional resistance: the Department of Defense, senior military leaders, and federal law-enforcement agencies historically resist using active-duty forces for routine domestic law enforcement, and could limit or delay execution.
- Severe legal and constitutional exposure: courts, governors, and Congress would almost certainly litigate and politically retaliate, raising the expected cost and making invocation a risky option.
- Viable alternatives exist (National Guard under governors, Title 32/Title 10 support, surge of federal law enforcement), which the administration is likely to prefer before taking the unprecedented step of invoking the Insurrection Act.
Key drivers
- Scale and geographic breadth of domestic unrest (multi-state violent unrest raises probability sharply)
- Severity and public framing of a border crisis (if framed as a national rebellion or extreme failure of state enforcement)
- Pentagon leadership stance and readiness to follow orders for domestic operations
- Governors’ cooperation or refusal — unified state opposition raises political/legal obstacles
- Judicial and congressional response speed (court injunctions can block or complicate execution)
Risk factors
- Ambiguity in event horizon / market participants conflating troop presence with formal Insurrection Act invocation
- Rapid media-driven sentiment swings that bid up the Yes side on headlines without substantive legal preparation
- Unforeseen escalations (terrorist attacks, sustained riots) that quickly change the baseline
- Changes in administration personnel (a more hawkish or more cautious Secretary of Defense) that materially affect execution likelihood
Scenarios
Best case
For the Yes outcome: A rapid, coordinated outbreak of violent unrest occurs across several large states (or a catastrophic border breakdown), state authorities are perceived as unable or unwilling to respond, and the administration frames the situation as an insurrection. The Pentagon and select governors accede or remain neutral, enabling the president to legally invoke the Act and deploy federal troops for law enforcement or stabilization — an inscription of decisive federal action.
Most likely
Limited federal support without formal invocation: The government responds to unrest or border pressures with a combination of National Guard deployments (largely under state authority), Title 10 limited support roles (defensive and logistical, not law enforcement), and federal law-enforcement surges. Public rhetoric remains hawkish, but the Insurrection Act is reserved for only the most extreme, widespread scenarios and is not invoked by Jan 1, 2027.
Worst case
No invocation prevails: The administration never reaches the threshold of multi-jurisdictional collapse; instead it uses National Guard forces, increased federal law enforcement, and administrative measures. Attempts to push for invocation are blocked by the Pentagon, subject to immediate litigation, and political costs (mass resignation threats, congressional investigations) deter any formal use.
More from this day
- FinancialsKalshi13y
Will OpenAI or Anthropic IPO first?
AI70%MKT24%Edge+46Hidden GemI assess ~70% chance that OpenAI will IPO before Anthropic. OpenAI shows clearer preparatory work, stronger near-term monetization paths, and investor incentives to pursue a public listing sooner than Anthropic.
- HealthKalshi2y
What will the average number of measles cases be during Trump's term?
AI70%MKT31%Edge+39Hidden GemI assess a 70% probability that the market's 'Yes' outcome occurs — the very large 2026 measles burden (1,952 confirmed as of May 21) creates a high baseline that makes a high multi-year average considerably more likely than markets currently price.
- PoliticsKalshi18y
Which G7 leader will leave next?
AI40%MKT78%Edge-38HypedI estimate a substantially lower chance than the market that the UK Prime Minister (Keir Starmer) will be the first G7 leader to leave; I put that probability at 40% and allocate the rest to other vulnerable leaders (Italy, France, Germany, Japan).