After much thought, I have come to what I consider to be the only logical conclusion that can be drawn as to why government agencies, (federal, state, & local) continue to use the polygraph even though all the scientific evidence proves it is worthless as a "lie detector".  I believe they are using the polygraph as a subterfuge to avoid complying with federal equal employment regulations!  What else explains the 65% "failure" rate for applicants who have already passed a very thorough background investigation?  These agencies can circumvent federal laws and discriminate against people by denying employment to anyone they don't want to hire and all they have to do is to say the applicant "failed" a polygraph test.  By simply saying the person has "failed" a polygraph test, government agencies can hire and fire people at will and then just blame it on the "failed" polygraph test.  There is no way anyone can appeal a hiring or firing decision that is based on a "failed" polygraph - and those who are denied employment or terminated have no recourse - they can't bring a lawsuit for discrimination or wrongful termination!  Do I believe the government agencies who utilize the polygraph are this nefarious?  YES!  And it is tantamount to criminal negligence on the part of those charged with oversight of these government agencies to allow them to continue to use this so-called "lie detector" testing!