xenonman[quote author=263B303130333F305E0 link=1228159328/5#5 date=1487013198][quote author= link=1228159328/3#3 date=1486123247]
Ironically, federal law prohibits use of the polygraph in the
private sector with the two exceptions noted above. 

Not entirely correct.  There is also an exemption for employer investigation of specific instances of workplace theft.