Some senior officials who have taken the test have been asked whether they said anything negative about the F.B.I. director, Kash Patel. By Adam Goldman Reporting from Washington Typically, the F.B.I.

Federal agencies have stepped up their efforts over the past few weeks to find potential leakers, and some — like the FBI, the Department of Homeland Security and the Department of Defense — are ...

"Even before the tremendous polygraph advancements, they were never considered per se unreliable in New Jersey," writes Frederick P. Sisto. Even before the tremendous polygraph advancements, they were ...