This is a major constitutional ruling on one of the most abused provisions of FISA." FISA Backdoor Surveillance Unconstitutional The recent ruling in United States v. Hasbajrami has sent shockwaves through the legal and intelligence communities, marking a decisive moment in the fight against warrantless surveillance under the Foreign Intelligence Surveillance Act (FISA). Judge LaShann DeArcy Hall’s decision that backdoor searches of FISA Section 702 databases violate the Fourth Amendment represents a significant milestone for privacy advocates and civil rights defenders. This ruling has profound implications for government surveillance practices, reaffirming constitutional protections in the digital age.