How did the USA PATRIOT Act affect staffing at the northern U.S. border?

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George W. Bush: signing of USA PATRIOT Act — USA PATRIOT Act Pres. George W. Bush signing the USA PATRIOT Act in the East Room of the White House, Washington, D.C., October 26, 2001.

The USA PATRIOT Act significantly impacted staffing levels along the northern U.S. border by mandating a tripling of the number of personnel for the Border Patrol, the Customs Service, and the Immigration and Naturalization Service (INS) in that region.1