Notice that the opposition to these scans happened only after a Senator was included in the warrantless dragnet.
The reforms introduced Tuesday reflect discomfort over the practice of warrantless scans, which are authorized under Section 702 of the Foreign Intelligence Surveillance Act. Its opponents were galvanized when the Office of Director of National Intelligence revealed in July that the FBI had improperly conducted searches for information about a U.S. senator and two state officials.
Notice that the opposition to these scans happened only after a Senator was included in the warrantless dragnet.
emphasis mine