[pc86]

Polygraphs are not used in US courts and the results are not admissible at trial, so I'm not sure what you're referring to in the last paragraph.

[mc32]

I think there is confusion/conflation with defendants offering to take a polygraph to prove innocence. Sometimes it’s a naive offer sometimes it’s someone who wants to “show proof” they “didn’t do it”.

[pc86]

Which is part of why they're inadmissible regardless of who wants to use them.

[mc32]

Sure but it’s usually a PR stunt by the defense “see my client is willing (therefore innocent as no liar would take the test the CIA uses to expose moles)”

“We took a privately administered test by a certified polygraph administrator and my client passed with flying colors!!!”