How the Department of Homeland Security has grown since post-9/11 creation
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The Department of Homeland Security, created by then President George W. Bush in the wake of 9/11 to tackle threats of international terrorism, has grown into one of the largest federal agencies in just under 20 years. NBC News’ Julia Ainsley breaks down how the agency has grown since its creation and the threats it is now facing. Sept. 10, 2021
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