Can the President Federalize a State’s National Guard?

Yes, the President can federalize the National Guard. Using authority delegated by Congress, chiefly 10 U.S.C. § 12406 and the Insurrection Act, a sitting president can pull a state’s Guard out of the governor’s chain of command and place those troops under federal military control. Presidents have done it roughly 30 times since the founding, and once the order is issued, the governor cannot override it.

The Statutes That Give the President This Power

The constitutional footing sits in Article I, Section 8, which gives Congress the power to provide for “calling forth the Militia to execute the Laws of the Union, suppress Insurrections and repel Invasions.”¹ Congress used that power to hand the actual call-up authority to the president through two statutes.

10 U.S.C. § 12406

This is the primary call-up statute. It lets the president order Guard members and units into federal service under three conditions: the country is invaded or faces the danger of invasion, there is a rebellion or danger of rebellion against federal authority, or the president cannot enforce federal law using the regular armed forces alone.² The president decides how many troops are needed and from which states to draw them.

The Insurrection Act

Codified in Chapter 13 of Title 10, the Insurrection Act is the broader, more politically charged authority. It covers three situations:

At a state’s request under § 251, when a state faces an insurrection against its own government and the legislature or governor asks for federal help.³
To enforce federal law under § 252, when rebellion or obstruction makes normal court enforcement impossible. No state invitation is required.³
To protect civil rights under § 253, when insurrection, conspiracy, or domestic violence deprives people of their constitutional rights and state authorities are unable or unwilling to protect them. The president can act regardless of the governor’s position.³

That third category has generated the most controversy because it lets the president override a governor who is actively obstructing federal law. It was the basis for federalizing the Guard during the civil rights era.

The Proclamation Step

Before deploying troops under the Insurrection Act, the president must issue a public proclamation ordering the people involved to disperse within a set time.⁴ The statute uses mandatory language. In practice, presidents have issued the proclamation and the deployment order on the same day, but the proclamation has to come first.

Can a Governor Refuse the Order?

No. The Supreme Court settled this in 1990. In Perpich v. Department of Defense, Minnesota’s governor challenged the federal government’s authority to send Guard members overseas for training without his consent. The Court held that once Guard members are called into federal service under a valid statute, they lose their state status and the governor has no power to block the order.⁵ Every Guard member is simultaneously enlisted in the state Guard and in a federal reserve component, and the federal claim wins when the federal government activates.

A governor who disagrees can object publicly, file suit challenging the legal basis, or lobby Congress. What a governor cannot do is order the troops to stay home.

What Changes When the Guard Is Federalized

The National Guard has a dual identity. Day to day, each state’s Guard answers to its governor and can be used for floods, wildfires, and civil emergencies. At the same time, the Army National Guard is a reserve component of the U.S. Army, and the Air National Guard is a reserve component of the U.S. Air Force.⁶ Federalization flips the switch to the federal side.

When the president activates Guard members into federal service under Title 10, command transfers entirely from the governor to the president and the Secretary of Defense. The troops become, for practical purposes, active-duty federal soldiers.⁷ That is what people mean by “federalizing” the Guard, and it is different from a Title 32 activation, where Guard members are paid with federal money but stay under the governor’s command.

The Posse Comitatus Wrinkle

Federalization creates a paradox that catches people off guard. When Guard members are under state command, they can run checkpoints, make arrests, and enforce curfews. The moment they are federalized under Title 10, a different rule kicks in.

The Posse Comitatus Act makes it a federal crime to use the Army, Navy, Marine Corps, Air Force, or Space Force to enforce civilian law, “except in cases and under circumstances expressly authorized by the Constitution or Act of Congress.”⁸ Federalized Guard members become part of the federal armed forces, so the Act applies to them. Violations carry up to two years in prison.

The main exception is the Insurrection Act itself. When the president federalizes the Guard under that Act, the deployment is expressly authorized by Congress, which satisfies the Posse Comitatus exception. That is why the statute the president invokes matters. Troops federalized under § 12406 for general federal service face real limits on law enforcement work. The same troops federalized under the Insurrection Act can enforce order because Congress has explicitly authorized domestic military deployment in those circumstances.

What Federalization Means for Guard Members

Federalization changes a Guard member’s legal status, pay, and benefits overnight.

Once federalized, Guard members fall under the Uniform Code of Military Justice, the same system that governs every active-duty service member.⁹ They are subject to military courts-martial rather than civilian courts for offenses committed during service. Their pay shifts to the federal military pay scale. Members activated for more than 30 consecutive days become eligible for TRICARE health coverage for themselves and their families.¹⁰

Civilian jobs are protected. Under the Uniformed Services Employment and Reemployment Rights Act, employers must reemploy a returning Guard member in the position they would have held if they had never left, provided the employer received advance notice, the member’s total military absences with that employer do not exceed five years, and the member applies for reemployment on time. The five-year cap has significant exceptions. Involuntary federal activation, service during a declared war or national emergency, and service called under the Insurrection Act or § 12406 all fall outside the cap.¹¹ A Guard member federalized by presidential order does not have that deployment counted against the limit.

When Presidents Have Actually Done It

Federalization is uncommon but not hypothetical. The most consequential cases cluster around the civil rights movement and urban unrest.¹²

In 1957, Arkansas Governor Orval Faubus deployed the Arkansas National Guard to block Black students from entering Little Rock Central High School. President Eisenhower federalized the entire Arkansas Guard, taking it out of Faubus’s control, and sent in the 101st Airborne Division to enforce a federal desegregation order. Executive Order 10730 directed the Secretary of Defense to use the federalized Guard and any additional armed forces necessary to remove the obstruction of justice.¹³ It was the first domestic federalization since Reconstruction, and it set the template for what followed.

President Kennedy used the same tool in 1962 when Mississippi’s governor resisted integration at the University of Mississippi, and again in 1963 at the University of Alabama. Guard units were federalized in 1965 for the Selma-to-Montgomery march. President Johnson federalized units during the 1967 Detroit riots and the 1968 riots after Martin Luther King Jr.’s assassination, and President Nixon did so during the 1970 New York postal strike.¹² The most recent federalization for domestic unrest came in 1992, when President George H.W. Bush invoked the Insurrection Act during the Los Angeles riots and federalized the California National Guard on the third day of violence.

Checks on the Power

The statutes set a threshold. Section 12406 requires invasion, rebellion, or inability to enforce federal law with regular forces.² The Insurrection Act requires insurrection, domestic violence, or obstruction of law. A federalization order untethered from those conditions would draw immediate legal challenges, but courts have historically been reluctant to second-guess a president’s factual determination that the conditions exist.

Congress holds the structural check. It wrote these laws and can amend or repeal them. What Congress has not done, as of 2026, is require the president to notify or justify a federalization. There is no statutory reporting requirement after ordering Guard units into federal service under § 12406 or the Insurrection Act. Proposed legislation would require presidential notification to Congress within 24 hours of a deployment, but no such requirement is currently in effect.

Judicial review is a theoretical backstop. Federal courts can hear challenges to the legality of a federalization order, though they generally treat military deployment decisions as political questions. By the time a court rules, the deployment is usually over or well underway.

Broad statutory language, no reporting requirement, judicial deference, and the Supreme Court’s holding that governors cannot refuse combine to make the president’s federalization power one of the least checked domestic authorities in the constitutional framework.