White House halts Pete Hegseth’s use of polygraph lie detector tests to catch media leakers—what are they and how do they work?

Defense Secretary Pete Hegseth’s efforts to stop Pentagon media leaks faced White House resistance after a senior aide, Patrick Weaver, objected to potential polygraph tests. Weaver’s concerns, backed by Stephen Miller, led to the White House halting Hegseth’s initiative. Polygraphs, which track physiological responses, are controversial due to questions about their accuracy in detecting lies.