
Martial law is a temporary substitution of military authority for civilian rule, usually invoked in times of war, rebellion, or natural disaster. In the United States, while the President may call the military into action to help local governments after a natural disaster, the President does not have the authority to unilaterally declare martial law. Instead, it is typically declared by state and local officials, such as governors, who can call on the National Guard to respond to emergencies. However, the exact scope and limits of martial law remain unclear due to the lack of a precise definition and established legal framework.
| Characteristics | Values |
|---|---|
| Who can declare martial law | The President, Congress, State governor, or State legislature |
| Who cannot declare martial law | The President, according to some sources |
| Who can impose martial law | The military, under the command of a military officer |
| When can martial law be imposed | When civil rule fails, in times of war, rebellion, civic dispute, or natural disaster |
| What happens when martial law is imposed | Civilian rule is temporarily replaced with military rule, and existing laws, civil authority, and judiciaries are suspended |
| Where has martial law been imposed in the U.S. | Colorado, Texas, Minnesota, California, Hawaii, and Washington |
Explore related products
What You'll Learn
- The US President can call martial law in certain circumstances
- State governors can declare martial law
- Territorial governors of Guam and the US Virgin Islands can declare martial law
- The US Constitution does not explicitly grant the President power to declare martial law
- Martial law has been declared more than 60 times in US history

The US President can call martial law in certain circumstances
The US Constitution does not explicitly grant the president the power to declare martial law. However, the president does have extensive authority to deploy the military domestically to perform law enforcement functions. The Insurrection Act gives the president the power to decide when and where to use US armed forces at home against Americans.
The US Constitution's Articles I and II give each branch some control over America's military forces. Article II, Section 2, lists the following presidential powers:
> "The President shall be Commander in Chief of the Army and Navy of the United States, and of the Militia of the several States, when called into the actual Service of the United States; he may require the Opinion, in writing, of the principal Officer in each of the executive Departments, upon any Subject relating to the Duties of their respective Offices, and he shall have Power to grant Reprieves and Pardons for Offences against the United States, except in Cases of Impeachment."
Under Section 251, if there is an insurrection in a state, and the state’s legislature (or governor, if the legislature is unavailable) requests federal aid, then the president may deploy the National Guard or the regular armed forces to suppress the insurrection.
Section 252 allows the president to deploy troops without a request from the affected state and even against the state’s wishes to enforce the laws of the United States or to suppress rebellion.
Martial law involves the temporary substitution of military authority for civilian rule and is usually invoked in times of war, rebellion, or natural disaster. When martial law is in effect, the military commander of an area or country has unlimited authority to make and enforce laws.
Who Pays for Law Enforcement Vehicles?
You may want to see also
Explore related products

State governors can declare martial law
In the United States, state governors can declare martial law. This has been the case more than 60 times in US history, and it usually occurs in an emergency when civilian rule fails and is temporarily replaced with military authority. This can happen in times of war, rebellion, civic dispute, or natural disaster.
When a state governor declares martial law, the military commander of the area assumes unlimited authority to make and enforce laws. This means that all existing laws, civil authority, and sometimes local judiciaries are suspended. The military commander can then substitute these with temporary laws and military tribunals.
There are several examples of state governors declaring martial law in US history. In 1934, Minnesota Governor Floyd B. Olson placed the city of Minneapolis under martial law due to escalating violence during the Minneapolis general strike. In the same year, California Governor Frank Merriam placed the docks of San Francisco under martial law, citing "riots and tumult" caused by a dock worker's strike. In 1914, martial law was declared by the governor during the Colorado Coalfield War, which eventually resulted in the Ludlow Massacre.
State governors can also call on the National Guard to respond to storms, power outages, or to deliver medical supplies. This is not considered an imposition of martial law.
Rewrite All Laws: A Necessary Task?
You may want to see also
Explore related products

Territorial governors of Guam and the US Virgin Islands can declare martial law
In the United States, martial law is typically declared in times of war, rebellion, or natural disaster. It involves the temporary substitution of military authority for civilian rule. When martial law is in effect, the military commander of the area assumes unlimited authority to make and enforce laws, and all existing laws, civil authority, and the ordinary administration of justice are suspended. While the U.S. Constitution does not explicitly grant the President the power to declare martial law, it can be declared by proclamation of a State governor.
Interestingly, two federal statutes (48 U.S.C. §§ 1422, 1591) specifically authorize the territorial governors of Guam and the U.S. Virgin Islands to declare martial law under certain circumstances. These statutes do not grant any power to the President. The circumstances under which these governors can declare martial law include disaster, invasion, insurrection, rebellion, or imminent danger thereof, or to prevent or suppress lawless violence.
Historically, there have been several instances where state governors have declared martial law. For example, in 1920, Governor Cornwell of West Virginia dispatched federal troops to Mingo County to deal with striking miners, resulting in a "veritable military dictatorship," according to the governor. In 1934, Minnesota Governor Floyd B. Olson declared martial law in Minneapolis due to escalating violence during a general strike. More recently, in 1963, the state-level declaration of martial law occurred in Maryland.
While the President cannot unilaterally declare martial law, they do have the power to deploy the military domestically under certain conditions. For instance, under Section 251, if there is an insurrection in a state, the President may deploy the National Guard or armed forces at the request of the state's legislature or governor. Additionally, Section 252 allows the President to deploy troops without the state's request to enforce federal laws or suppress rebellion when unlawful obstructions or assemblages make it impractical to do so otherwise.
Non-Attorney Law Firm Ownership: Is It Legal?
You may want to see also
Explore related products

The US Constitution does not explicitly grant the President power to declare martial law
The US Constitution does not explicitly grant the President the power to declare martial law. While the US Constitution's Articles I and II give the legislative and executive branches some control over America's military forces, it does not define or mention martial law.
The US Constitution does not provide a clear answer to who can impose martial law. It does not explicitly grant the President the power to declare martial law, and the Supreme Court has never explicitly held that the President can. However, several Presidents throughout history have declared martial law.
The legislative history of the relevant acts indicates that Congress meant to authorize the military to take on a policing role, but not to declare martial law. Indeed, the House version of Section 4 of the act explicitly authorized the President to declare martial law, but this language was removed before the bill was sent to the Senate. This demonstrates that Congress was aware of the concept and chose not to authorize it.
Despite the lack of explicit constitutional authorization, some scholars argue that the President does have the power to declare martial law based on the Constitution's enumerated war powers. Article II, Section 2, states that the President "shall be Commander in Chief of the Army and Navy of the United States, and of the Militia of the several States, when called into the actual Service of the United States." This commander-in-chief clause is cited as evidence that the President has the authority to declare martial law.
Additionally, the Insurrection Act of 1807 allows the President to deploy military forces to suppress rebellions and assist local law enforcement. However, the Posse Comitatus Act of 1878 prevents the US military from participating in civilian law enforcement activities, creating a separation of powers between Congress and the President.
In conclusion, while the US Constitution does not explicitly grant the President the power to declare martial law, the interpretation of the Constitution's war powers and the Insurrection Act of 1807 have been used to justify the President's ability to declare martial law in certain circumstances. However, the absence of a clear constitutional provision and the removal of explicit language from legislation suggest that Congress did not intend to grant the President this authority.
Grandfather Clauses: Understanding Their Impact on Legal Changes
You may want to see also
Explore related products

Martial law has been declared more than 60 times in US history
In the United States, martial law refers to the temporary transfer of governing authority from civilian bodies to a military commander, who gains the power to make and enforce laws. Although the US Constitution does not explicitly grant the president the power to declare martial law, it has been declared at least 60 times in US history, with some sources citing a figure of 68.
The power to impose martial law lies with the US President and Congress at the national level, and with state governors within their respective states. Notably, martial law has been imposed far more frequently by states than by the federal government. In nearly every state, the governor has the power to impose martial law within the state's borders.
Martial law has been declared for various reasons, including war or invasion, domestic war or insurrection, riot or civil unrest, labour dispute, and natural disaster. For example, during the West Virginia Coal Wars (1920-1921), martial law was declared in the state of West Virginia at the behest of Governor Cornwell, who dispatched federal troops to deal with striking miners. Similarly, in 1931, the governor of Texas declared martial law in parts of East Texas due to what he called an insurrection, following a dispute between oil workers and the state.
The use of martial law has been limited by several court decisions and acts of Congress, such as the Posse Comitatus Act of 1878, which forbids US military involvement in domestic law enforcement without congressional approval. Despite these constraints, the imposition of martial law remains a significant aspect of American history, with a long legacy of invocations by state and federal officials.
Local Law Enforcement: Can They Arrest Undocumented Immigrants?
You may want to see also
Frequently asked questions
The President does not have the explicit power to declare martial law. However, they may deploy the National Guard or armed forces to suppress insurrection or enforce the laws of the United States if requested by a state's legislature or governor.
Yes, state governors can declare martial law. For example, the governor of Texas declared martial law in parts of East Texas in 1931 due to an insurrection.
Congress has the power to pass legislation to define and control the utilization of martial law. However, the Supreme Court has not explicitly stated whether Congress can declare it unilaterally.
Yes, territorial governors of Guam and the U.S. Virgin Islands can declare martial law under certain circumstances according to two federal statutes (48 U.S.C. §§ 1422, 1591).











































