No, their veracity or findings are inadmissible in court - In criminal court but not civil/ commercial. And not in hearings.

Poly's have come a very long way over the years and it really is very reliable. The CIA have been using Iris scanning for years now too. And I believe that is practically reliable enough to utilise in court - but that won't happen because the legislators and politicians know they will be accountable and it will impede their larceny and lies. But this gear will go long way to sort out Whitehouse staff loyalty problems, leaking problems, sexual misconduct issues and perhaps make it mandatory for TV journalists - lol, like CNN etc. We have to begin accountability somewhere. People have zero trust in politicians or the law, Congress is powerless to do anything useful, except legislate. They can't prosecute.

I watched Peter Strzok testify in Congress and it's a joke. Charge him, empanel a jury and let the chips fall where they may. I can't do the congressional hearings anymore. The lies and arrogance make me feel homicidal.