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federalize

American  
[fed-er-uh-lahyz] / ˈfɛd ər əˌlaɪz /
especially British, federalise

verb (used with object)

federalized, federalizing
  1. to bring under the control of a federal government.

    to federalize the National Guard.

  2. to bring together in a federal union, as different states.


federalize British  
/ ˈfɛdərəˌlaɪz /

verb

  1. to unite in a federation or federal union; federate

  2. to subject to federal control

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of federalize

First recorded in 1795–1805; federal + -ize

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Now that might not be an option, after the Supreme Court in December ruled against his effort to federalize the Guard in Illinois.

From The Wall Street Journal Jan. 8, 2026

“Although we hold that the President likely has authority to federalize the National Guard, nothing in our decision addresses the nature of the activities in which the federalized National Guard may engage,” Bennett wrote.

From Los Angeles Times Jun. 24, 2025

He instead evoked a very rarely used law that was last applied in 1965 by President Lyndon Johnson to protect civil rights workers from local police, allowing him to federalize those troops.

From Salon Jun. 9, 2025

The creation of the Department of Homeland Security federalized disaster response power in Washington, and the Transportation Security Administration was created to federalize airport security.

From Textbooks Jul. 28, 2021

While the tricolour waved at Amsterdam, Mainz, Berne, Rome, Valetta, and Cairo, Fox thought it opportune to federalize British institutions.

From William Pitt and the Great War by Rose, John Holland

After the Los Angeles operation, the administration federalized the Washington, D.C., police department and deployed National Guard members there, too, giving DHS agents room to ramp up their enforcement in the nation’s capital.

From Slate Jan. 28, 2026

Breyer ordered that command of the remaining federalized troops be returned to Newsom, rejecting the administration’s argument that once federalized, Guard units could remain under presidential control indefinitely.

From Los Angeles Times Dec. 31, 2025

“Six months after they first federalized the California National Guard, Defendants still retain control of approximately 300 Guardsmen, despite no evidence that execution of federal law is impeded in any way—let alone significantly,” Breyer wrote.

From Salon Dec. 10, 2025

However, the National Guard is generally not allowed to perform domestic law enforcement duties when federalized by the president.

From Los Angeles Times Oct. 22, 2025

An article in the newspaper announced that hall patrols by federalized National Guardsmen would be eliminated, although they would remain in the building and make periodic checks.

From "Warriors Don't Cry: A Searing Memoir of the Battle to Integrate Little Rock's Central High" by Melba Pattillo Beals

His patience would last less than 24 hours before federalizing the National Guard in a historic action.

From Los Angeles Times Jun. 9, 2025

“We’re not talking about federalizing anything … or selling assets to the highest bidder,” he said.

From Washington Times Jul. 25, 2018

However, Grassley was clear in saying he had no interest in federalizing local law enforcement or in second-guessing the actions of officers or agencies.

From US News May 5, 2015

It’s not clear, however, what precise impact federalizing the issue could have.

From Slate May 4, 2012

Three days later President Eisenhower trumped the state, federalizing the states guard and sending in US Army troops to escort the nine through the school’s doors.

From "Hidden Figures" by Margot Lee Shetterly

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