- Electronic Surveillance
- Physical Searches
- Pen Registers and Trap & Trace Devices for Foreign Intelligence Purposes
- Access to certain Business Records for Foreign Intelligence Purposes
Section 6001 of the Intelligence Reform and Terrorism Prevention Act of 2004, expanded FISA to permit targeting of so-called "lone wolf" terrorists without requiring any showing that they are members of a terrorist group or agents of such a group or of any other foreign power.