The case became one of the most controversial chapters of the Trump-Russia investigation after a Justice Department inspector general report identified significant errors and omissions in the FBI’s applications to surveil Page. Former FBI and Justice Department officials involved in approving the warrants later said they would not have signed off on the applications had they known the full extent of the problems identified by investigators.

Carter Page, former advisor to President-elect Donald Trump, addresses the audience during a presentation in Moscow, Russia, on Dec. 12, 2016.
In response to the watchdog findings, the FBI implemented dozens of corrective measures aimed at improving the accuracy and completeness of future surveillance applications.
Page sued Comey and other former officials, alleging they violated his constitutional rights by submitting flawed applications to obtain surveillance authority. Lower courts dismissed the case, finding, among other things, that Page had not sued the officials who directly carried out the surveillance.
Page recently reached a $1.25 million settlement with the federal government related to the surveillance claims but sought to continue pursuing claims against individual former officials.
FBI LAUNCHES CRIMINAL INVESTIGATIONS OF JOHN BRENNAN, JAMES COMEY: DOJ SOURCES