Kerr County repeatedly failed to secure a warning system, even as local officials remained aware of the risks and as billions of dollars were available for similar projects.
A senior Homeland Security official testified in court on Wednesday that his department had relied in part on an anonymously compiled list to identify foreign academics for investigation.
Peter Hatch, the assistant director of the Homeland Security Investigations department within ICE, testified that a team he oversaw had been directed to pore over the thousands of individuals profiled by the Canary Mission, an anonymous group that has been accused of doxxing individuals engaged in anti-Israeli activism.