Yes. The president can federalize the National Guard, converting state-controlled units into federal active-duty forces under direct presidential command, using authority Congress delegated in 10 U.S.C. § 12406 and the Insurrection Act. Once the order takes effect, the affected governor loses command of those units, and the Supreme Court has held that governors cannot veto the call-up.
The Statutes That Grant the Power
The constitutional footing sits in Article I, Section 8, Clauses 15 and 16, which give Congress the power to call forth the militia to execute federal laws, suppress insurrections, and repel invasions, and to organize and discipline it.1Cornell Law School / Legal Information Institute (LII). Clauses 15 and 16 – The Militia Congress handed that calling-forth power to the president, and the Supreme Court upheld the delegation as constitutional in 1795.
The most direct statute is 10 U.S.C. § 12406. It lets the president call National Guard members and units into federal service in three situations: invasion or threat of invasion by a foreign nation, rebellion or danger of rebellion against federal authority, or the inability to execute federal law with regular forces. Orders under § 12406 are issued through the governors of the affected states, but the decision belongs to the president.2Office of the Law Revision Counsel. 10 USC 12406 – National Guard in Federal Service: Call
The Insurrection Act, at 10 U.S.C. §§ 251–255, provides broader domestic deployment authority and covers three distinct triggers:
- Section 251 lets the president call in the militia and armed forces to help a state put down an insurrection against its own government, but only when the state legislature (or the governor, if the legislature cannot convene) requests help.
- Section 252 lets the president act without any state request when rebellion or organized resistance makes it impractical to enforce federal law through the courts.
- Section 253 lets the president intervene unilaterally when domestic violence or organized lawlessness deprives people of constitutional rights and state authorities will not or cannot protect them.3Office of the Law Revision Counsel. 10 USC Ch. 13 – Insurrection
Before troops move under the Insurrection Act, the president must issue a proclamation ordering those involved to disperse within a set time. Only after that proclamation goes unheeded can forces be deployed.4Office of the Law Revision Counsel. 10 USC 254 – Proclamation to Disperse
What Changes When the Order Takes Effect
Federalization starts with a presidential directive — an executive order or memorandum — instructing the Secretary of Defense to call specific units or personnel into federal service. The directive names the legal authority and describes the mission.
Once the order takes effect, Guard members shift from state to federal active duty. Their chain of command runs to the president through the Secretary of Defense rather than to their governor. They deploy where ordered and receive federal pay and benefits.5The National Guard. National Guard Duty Statuses The governor has no authority over those units for the duration of federal service.
Can a Governor Refuse?
No. The Supreme Court settled this in Perpich v. Department of Defense (1990), which held that Congress can authorize Guard members to be ordered to federal active duty without a governor’s consent and without a national emergency declaration. Because Guard members hold a dual enlistment in both the state National Guard and the federal reserve component, the Militia Clauses do not give governors a veto over federal activation.6Justia Law. Perpich v. Department of Defense, 496 U.S. 334 (1990)
The distinction that matters is between a request and a command. When the federal government asks a governor to deploy Guard units under Title 32, where the governor keeps command, the governor can say no. A Title 10 federalization order for a constitutionally authorized purpose leaves no room for refusal. A governor who tried to physically prevent Guard members from reporting for federal duty would be obstructing federal authority.
Not every federal deployment of Guard troops involves federalization. President Trump’s June 2025 memorandum federalizing at least 2,000 Guard members under § 12406 to protect ICE agents and other federal personnel directed the Secretary of Defense to coordinate with governors in identifying which units to call up.7The White House. Department of Defense Security for the Protection of Department of Homeland Security Functions Coordination is not consent, but it reflects that the politics of federalization involve negotiation even when the legal authority is clear.
When Presidents Have Actually Done It
The power has been used since the founding. George Washington called up state militia in 1794 to suppress the Whiskey Rebellion. Abraham Lincoln called up 75,000 militia in 1861 to fight the Confederacy.8The National Guard. Civil Disturbance Operations in National Guard History
The Civil Rights era produced the most prominent examples. In September 1957, President Eisenhower federalized the entire Arkansas National Guard after Governor Orval Faubus used state Guard troops to block Black students from entering Central High School in Little Rock. Executive Order 10730 placed those same Guard units under federal command, and Eisenhower deployed the 101st Airborne Division to escort students into the school.9National Archives. Executive Order 10730: Desegregation of Central High School (1957) Little Rock made the mechanic clear: a governor can use the Guard to obstruct federal law, and the president can take those same troops away and use them to enforce it.
Kennedy and Johnson followed the same pattern during desegregation of the University of Mississippi in 1962, the University of Alabama in 1963, and the Selma-to-Montgomery marches in 1965. Later federalizations addressed civil unrest: the 1967 Detroit riots, the 1968 riots following the assassination of Martin Luther King Jr., the 1970 New York postal strike, and the 1992 Los Angeles riots.8The National Guard. Civil Disturbance Operations in National Guard History
More than three decades passed between the 1992 LA riots and the next domestic federalization. During the 2020 protests following the death of George Floyd, the option was discussed but Guard members from other states were deployed under Title 32 instead, keeping them under state control. The June 2025 order setting a 60-day duration for the ICE protection mission was the first return to Title 10 federalization for domestic purposes since 1992.7The White House. Department of Defense Security for the Protection of Department of Homeland Security Functions
Limits on the Power
Federalization is not unlimited. Statutory caps constrain how many troops can be called and for how long:
- When the president declares a national emergency, Guard members in the Ready Reserve can be called to active duty for no more than 24 consecutive months under 10 U.S.C. § 12302.10Office of the Law Revision Counsel. 10 USC 12302 – Ready Reserve
- Outside a war or national emergency, no more than 200,000 Selected Reserve and Individual Ready Reserve members can be on active duty at any one time under 10 U.S.C. § 12304, with no more than 30,000 from the Individual Ready Reserve.11Office of the Law Revision Counsel. 10 USC 12304 – Selected Reserve and Certain Individual Ready Reserve Members; Order to Active Duty Other Than During War or National Emergency
The Insurrection Act itself contains no explicit time limit or troop cap. The check is the disperse-proclamation requirement and the practical reality that Congress controls military funding.
The Posse Comitatus Constraint
Federalized Guard members are subject to the Posse Comitatus Act, 18 U.S.C. § 1385, which prohibits using federal military forces for civilian law enforcement unless a statute specifically authorizes it.12Office of the Law Revision Counsel. 18 USC 1385 – Use of Army, Navy, Marine Corps, Air Force, or Space Force as Posse Comitatus Guard members operating under state authority are not bound by Posse Comitatus and can perform arrest and search functions at their governor’s direction; federalization changes that.
The Insurrection Act is the primary exception. When invoked, federalized Guard members can protect federal property, enforce court orders, and restore public order. Without an Insurrection Act invocation, federalized Guard members are generally limited to support roles such as logistics, transportation, and perimeter security rather than arrests or warrant execution.
What Federalization Means for Guard Members
Refusing a federalization order carries real consequences. Once federalized, Guard members fall under the Uniform Code of Military Justice. A member who refuses to report or disobeys a lawful order faces prosecution under Article 92 for failure to obey an order or regulation. Court-martial penalties can include confinement, forfeiture of pay, reduction in rank, and dishonorable discharge.13Office of the Law Revision Counsel. 10 USC 892 – Art. 92. Failure to Obey Order or Regulation
Two federal laws cushion the civilian side. The Uniformed Services Employment and Reemployment Rights Act requires civilian employers to reemploy Guard members returning from federal active duty, so long as cumulative military absences with that employer do not exceed five years. USERRA uses an escalator principle: your employer must place you in the position you would have held had you never left, including promotions you would have received with reasonable certainty.14U.S. Department of Labor. A Guide to the Uniformed Services Employment and Reemployment Rights Act For service of 31 to 180 days, you have 14 days after completing service to apply for reemployment. For service of 180 days or more, you have 90 days.
The Servicemembers Civil Relief Act caps interest at 6 percent per year on most debts you took on before entering federal service, including mortgages, car loans, and credit cards. Interest above 6 percent is forgiven rather than deferred, and monthly payments must be reduced accordingly.15Office of the Law Revision Counsel. 50 USC 3937 – Maximum Rate of Interest on Debts Incurred Before Military Service For mortgages the cap extends one year past the end of military service; for other debts it lasts only during service itself. You have to notify creditors in writing and provide a copy of your military orders to trigger the protection.16U.S. Department of Justice. Your Rights as a Servicemember: 6% Interest Rate Cap on Pre-Service Debts