Final answer:
The Patriot Act gave law enforcement the tools they needed to fight terrorism in the United States by legally expanding surveillance powers against individuals suspected of involvement in terrorism.
Step-by-step explanation:
The Patriot Act gave law enforcement the tools they needed to fight terrorism in the United States. Officially known as the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001, the Patriot Act expanded the powers of the federal government to legally use surveillance against any individual suspected of possible involvement in international or domestic terrorism.