Will President Trump invoke the Insurrection Act to deploy troops inside the United States before January 1, 2027?

We put the chance at 8% that President Trump invokes the Insurrection Act to deploy troops inside the United States before January 1, 2027. The biggest reason: he has threatened to use it at least four times since 2020 without once following through, and his administration keeps building workarounds rather than taking that step.

Evidence cutoff Version 1 of 1By the TPG Forecast Desk, edited by Frank Carrasco, PhD#f9033289ae

Why it matters: Invoking the Insurrection Act would let soldiers make arrests and conduct searches on American streets for the first time since 1992, during a midterm election and a national fight over immigration enforcement.

TPG forecast

8%

Very unlikely

Unlikely, threats have not become action

Our odds over timeTPG forecastMarket
0%25%50%75%100%Resolves Dec 31, 2026Sep 26, 2026

Version 1: 8% (range 4% to 15%) · Kalshi 15%

Evidence cutoff Sep 26, 2026 · published Sep 26, 2026 · Unlikely, threats have not become action

This forecast is on its first version. Each update adds a point; old versions are never edited.

The numbers behind the call

about 30

times the Insurrection Act has been invoked since 1807[1]

1992

year of the last invocation, during the Los Angeles riots[2]

17 of 45

presidents who have used the law, per a Brennan Center count[3]

150 years

since the law was last meaningfully updated[4]

50 days

or fewer left before the midterm when NPR reported rising fears of military deployment[5]

What it means for you

Residents of targeted cities

Troops could carry out law enforcement tasks such as arrests and searches, which the Posse Comitatus Act normally forbids, changing how protests, immigration raids and street policing work.

Immigrants and immigrant communities

Most recent threats followed protests against ICE operations. An invocation tied to immigration enforcement would put military units alongside ICE in neighborhoods with large immigrant populations.

Voters and election workers

The midterm is November 3, 2026. Deploying troops to polling places is illegal, but any invocation near Election Day would raise fears of intimidation and likely draw emergency lawsuits from states.

National Guard members and their employers

Guard members could be called away from civilian jobs for weeks under federal orders, as happened during the 2025 deployments in Los Angeles, Portland and Chicago.

State governments

Governors who object would lose the court route that blocked the 2025 Guard federalizations, because the Insurrection Act gives the president much broader discretion than the law used then.

The read

Three lenses, always in this order. How the method works.

01

Psychology

What do the decision makers need?

President Trump uses the Insurrection Act as a threat more than a tool. In 2020 he warned he might send troops against the George Floyd protests, in October 2025 he said he could always use the law if he wanted to, and in January 2026 he threatened it over protests in Minneapolis. Each time, the threat applied pressure on governors and protesters and then faded. A threat that costs nothing to repeat is weak evidence of intent.

The costs of actually invoking it are high and specific. It would be the first use in more than three decades, it would hand opponents a defining image weeks before or after a midterm, and it would test the loyalty of military leaders who have publicly said they see no plans to put troops near polls. The administration's revealed preference is to find options that deliver force without that label, such as federalized Guard deployments in 2025 and, most recently, a DHS plan to deputize Guard members as immigration officers.

What could change the calculus is a sudden, violent event that makes invocation look like a response rather than a choice: a riot after a contested election result, a deadly attack on federal agents, or a city refusing to protect a federal facility. Leaders who have repeatedly said they are allowed to do something face lower audience costs when a crisis gives them a reason.

02

History

What happened the last times this came up?

The Insurrection Act has been invoked only about 30 times since 1807, and the last was the 1992 Los Angeles riots, at the request of California's governor. The long gap covers riots, hurricanes and the 2020 protests, all of which were handled with state-controlled Guard forces or other authorities.

The closest analogue is June 2020. Protests were widespread, the president publicly raised the Insurrection Act, and senior defense officials resisted. He did not invoke it. The difference now is that the Supreme Court's December 2025 ruling in Trump v. Illinois narrowed the other federal law the administration used to federalize the Guard, which leaves the Insurrection Act as the clearest remaining route for sending troops into an unwilling state.

Where that analogy breaks: in 2020 the president was in his first term with more independent-minded defense leadership. In 2026 the administration has shown more willingness to deploy forces domestically, having federalized or tried to deploy Guard troops in three states in 2025. That makes the step smaller than it was, even if it has still not been taken.

03

Statistics

Base rate, adjustments, the number.

Start from the historical rate. With zero invocations in the 34 years since 1992, the rule of succession gives about 1 in 36 per year, or roughly 0.7% for a three-month window.

Adjust for this president. He has threatened invocation at least four times and federalized the Guard over governors' objections, so we multiply the baseline by about five, to roughly 4%. Then add about 4 points for the specific risks of this window: the November 3 midterm and any post-election unrest, ongoing clashes over ICE operations, and the Illinois ruling that pushed the administration toward the Insurrection Act as its main legal route. That gives about 8%.

The Kalshi market for invocation before 2027 trades at about 15 cents. We are lower because the market prices threats that have repeatedly failed to convert, and because the administration's recent moves, like deputizing Guard members for immigration work, are designed to get similar results without invoking the law.

Between the lines

What people spent versus what they said, and what was left out.

Cheap talk

Trump said in October 2025 that the administration was trying to act in a nicer manner but could always use the Insurrection Act if it wanted.

Framing the law as a reserve option, not a plan, is a pressure tactic. It keeps governors guessing without incurring the costs of acting. Repeated threats with no follow-through lower, not raise, the odds of any single one being real.

Costly signal

An internal DHS memo lays out a plan to deputize National Guard members as immigration enforcement officers.

Building a workaround takes real bureaucratic effort. It shows the administration is investing in ways to get troops doing enforcement work without the political and legal exposure of invoking the Insurrection Act.

Personnel move

Joint Chiefs Chairman General Dan Caine answered a senator that there are no plans to send troops to the polls, while NORTHCOM's commander said he would examine any such order very closely.

Uniformed leaders are putting their caution on the record before the election. That raises the internal friction any invocation would face, especially around Election Day.

What was left out

Asked in May whether he would rule out using the military around the election, the president said he would do anything necessary to ensure honest elections, and the White House did not clarify.

Declining to rule it out keeps the option alive and is the main reason our number is not lower. But ambiguity is also cheaper than commitment, consistent with the threat pattern.

Base rate

1%

chance of an invocation in any three-month window, implied by zero uses in the 34 years since 1992[1][2]

Computed by us with Laplace's rule of succession (1 in 36 per year, divided across four quarters), using NPR's report that the law has been invoked about 30 times since 1807, most recently in 1992. (n = 34)

Closest historical parallels

  • George Floyd protests (2020)

    Alike: Nationwide unrest, president publicly weighed the Insurrection Act.

    Outcome: Not invoked; Guard used under state control.

    Where it breaks: First-term defense leadership pushed back harder, and the other legal routes had not yet been narrowed by the courts.

  • Los Angeles riots (1992)

    Alike: Large-scale urban violence, federal troops deployed under the Insurrection Act.

    Outcome: Invoked at the governor's request.

    Where it breaks: The state asked for help. Today's scenarios mostly involve governors who oppose deployment.

  • Minneapolis ICE protests (2026)

    Alike: Same president, protests against immigration enforcement, explicit invocation threat.

    Outcome: Threat not carried out.

    Where it breaks: Came before the midterm campaign and before the DHS Guard deputization plan offered an alternative.

  • Trump v. Illinois (2025)

    Alike: Legal fight over sending federalized Guard troops into an unwilling state.

    Outcome: Supreme Court denied the administration's request 6-3 in December 2025.

    Where it breaks: Concerned a different statute. It raised, not lowered, the relative appeal of the Insurrection Act by closing the easier path.

How it could play out

Every path we see, sized by probability. Paths that resolve YES add up to our 8%.

  • Threats and workarounds, no invocation No62%

    New threats, Guard deputization or other deployments under different authorities, but no formal invocation.

  • Quiet period, no escalation No30%

    Midterm passes without major unrest and the issue fades.

  • Invoked over immigration enforcement clashes Yes4%

    A serious attack on ICE agents or a facility in a sanctuary city, followed by a governor refusing to deploy the Guard.

  • Invoked over election-related unrest Yes3%

    Violent protests or disputes over results after November 3 in a state whose governor refuses federal help.

  • Invoked for another emergency Yes1%

    Major disaster with breakdown of order, or a riot unrelated to elections or immigration.

What would change our number

↑

A drafted Insurrection Act proclamation is reported, or the Justice Department issues an opinion on invoking it

+15 to +25 points
↑

Large-scale violence in a major city tied to ICE operations or election results

+10 points
↓

The DHS Guard deputization plan is put into operation in a state with a cooperative governor

-2 points, as a substitute
↓

Election Day and certification pass without major unrest

to about 3%

TPG 8% vs Kalshi 15%

The Kalshi contract for invocation before 2027 last traded at 15 cents with a 15 to 16 cent spread and heavy volume. The market's longer contract through January 2029 trades near 41 cents. We think the short-dated price overweights the midterm scenario given a record of threats that never converted.

Market price recorded September 26, 2026 from Kalshi. Analysis, not investment advice.

How this question resolves

Resolves YES if, between September 26, 2026 and 11:59 p.m. Eastern on December 31, 2026, President Trump formally invokes the Insurrection Act (10 U.S.C. 251 to 255), by proclamation, executive order or other official directive citing those provisions, to deploy active-duty military or federalized National Guard forces within the United States. Resolves NO otherwise. Threats, statements that the law could be used, and deployments under other authorities such as 10 U.S.C. 12406 or Title 32 do not count.

Closes: December 31, 2026. Judged by: A White House proclamation or executive order published on whitehouse.gov or in the Federal Register, or consistent reporting by major national news outlets

Questions people ask

Will Trump invoke the Insurrection Act before the midterms?

+

The TPG Forecast Desk puts the chance at 8% that President Trump invokes the Insurrection Act before January 1, 2027, a window that includes the November 3 midterm. He has threatened to use it at least four times since 2020 without doing so, and his administration has favored workarounds such as federalizing or deputizing National Guard troops.

When was the Insurrection Act last used?

+

The Insurrection Act was last invoked in 1992, during the Los Angeles riots, at the request of California's governor. It has been used only about 30 times since 1807. No president has invoked it in the more than three decades since, including during the 2020 protests, when President Trump threatened to but did not.

What does the Insurrection Act allow the president to do?

+

The Insurrection Act lets the president deploy active-duty troops or federalized National Guard inside the United States to suppress insurrection or enforce federal law, even over a governor's objection. Unlike ordinary Guard deployments, it allows troops to carry out law enforcement tasks such as arrests and searches, which the Posse Comitatus Act otherwise bars.

Can troops be sent to polling places in 2026?

+

No. Federal law makes it illegal for the president to send troops or armed federal agents to polling places, and legal experts say the Insurrection Act does not override that. The chairman of the Joint Chiefs has said there are no plans to send troops to the polls. Governors can use their own Guard to support election logistics.

Sources

Every source is dated on or before the September 26, 2026 evidence cutoff. Nothing published later was used.

  1. [1]Trump threatened to invoke the Insurrection Act (again). What is it?. NPR, Jan 15, 2026.

    “Since President Thomas Jefferson signed it into law in 1807, the Insurrection Act has been invoked only about 30 times”

  2. [2]Trump threatened to invoke the Insurrection Act (again). What is it?. NPR, Jan 15, 2026.

    “The last instance was over three decades ago, during the 1992 Los Angeles riots”

  3. [3]Trump threatened to invoke the Insurrection Act (again). What is it?. NPR, Jan 15, 2026.

    “only 17 out of 45 presidents”

  4. [4]The Insurrection Act, Explained. Brennan Center for Justice, Nov 12, 2025.

    “the law, which has not been meaningfully updated in over 150 years, is dangerously overbroad and ripe for abuse”

  5. [5]Fears grow that Trump could use military to influence the upcoming election. NPR, Sep 17, 2026.

    “The election is less than 50 days away, and there is growing concern that President Trump could deploy federalized National Guard troops”

  6. [6]What is the Insurrection Act? Here's what Trump has said about using it. PBS News, Jan 15, 2026.

    “We're trying to do it in a nicer manner, but we can always use the Insurrection Act if we want”

Version history and integrity

Published forecasts are never edited. When the evidence changes we publish a new version beside the old one, each locked with a sha256 hash of its full contents. When this question resolves it is scored in public on our track record.

VersionCutoffForecastLock hash
v1Sep 26, 20268% Very unlikelyf9033289aeecbd9baf39b59bddf31ca1795f1d2c2f9318eb8a0b4221935ad423

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