Several recent amendments to the Foreign Intelligence Surveillance Act (FISA) will sunset on December 31, 2009.

Section 6001(a) of the Intelligence Reform and Terrorism Protection Act (IRTPA), also known as the "lone wolf" provision, changed the rules regarding the types of individuals that could be targets of FISA-authorized searches. It permits surveillance of non-U.S. persons engaged in international terrorism, without requiring evidence linking those persons to an identifiable foreign power or terrorist organization.