I just today came across an 21 June 2024
Rolling Stone article by writers Asawin Suebsaeng and Adam Rawnsley titled "Trump's Not 'Bluffing': Inside the MAGA Efforts to Make a Second Term Even More Extreme." (https://www.rollingstone.com/politics/politics-features/trump-not-bluffing-maga-extreme-second-term-1235044464/) In it, they report, among other things:
QuoteOne idea regularly kicked around Trump's government-in-waiting is a dramatic increase in the use of "lie detectors" across the federal apparatus, to root out or charge leakers and other subversives. These devices, called polygraphs, are frequently unreliable and inadmissible in courts of law. Then-President Trump and his then-attorney general, Jeff Sessions, mulled expanded use of polygraphs during the first term, when leaks to the media were especially copious.