Who signed the USA PATRIOT Act into law?

The USA PATRIOT Act was signed into law by President George W. Bush on October 26, 2001, in the aftermath of the September 11 terrorist attacks. The purpose of the Act was to enhance law enforcement's ability to prevent terrorism and strengthen national security through a range of new surveillance and investigative powers. This context is crucial as it reflects the urgent need for legislative measures to address the perceived threat of terrorism at that time. Other presidents mentioned in the options were not in office during the passage of this legislation, making them irrelevant to this particular question regarding the signing of the Act.