James X. Dempsey argued that , which allows for roving surveillance under FISA, was reasonable considering that investigators already had the ability to perform roving surveillance in criminal cases. However, he says that "as with so many provisions of the PATRIOT Act, the concern with Section 206 is not with the authority itself rather, the issue is the lack of adequate checks and balances". Dempsey believes that the section lacks two important safeguards that are present in the corresponding legislation for criminal investigations: 1) that agents actually ascertain the location of the suspect before turning on their recording devices, and 2) that "some additional changes to FISA adopted outside of the normal process in the Intelligence Authorization Act a few months after the PATRIOT Act had the probably unintended effect of seeming to authorize "John Doe" roving taps – that is, FISA orders that identify "neither" the target nor the location of the interception.". Dempsey also believes that the law should be changed so that those under surveillance via FISA should also be notified after surveillance has ceased, so that those wrongly targeted and placed under surveillance can challenge the government's actions. However, Paul Rosenzweig disagreed with Dempsey's premise that "relaxation of the particularity requirement is constitutionally suspect" and believed that it colored his argument that section 206 should be modified. Rosenzweig believes that the addition of an ascertainment requirement and the requirement that the identification of individuals should be more specific "seem unnecessary and unwise" — in Rosenzweig's view it would unnecessarily burden the ability of law enforcement and intelligence agents to perform surveillance on terrorist suspects.