Three amendments to the Foreign Intelligence Surveillance Act (FISA) are set to expire (sunset) on February 28, 2011. The three sunsetting amendments expanded the scope of federal intelligence-gathering authority following the 9/11 terrorist attacks. Two amendments were enacted as part of the USA PATRIOT Act. Section 206 of the USA PATRIOT Act amended FISA to permit multipoint, or "roving," wiretaps by adding flexibility to the degree of specificity with which the location or facility subject to electronic surveillance under FISA must be identified.