Wow, that is a little disconcerting.  I understand the FBI (actually the entire national security apparatus) has an arsenal of high-powered attorney's that could dispute anything regarding their justifying the use of the polygraph and their current hiring procedures.  I never realized...

Politics can be such a dirty word, but what we're talking about doing (taking care of American citizens and national security interests alike) is just that -- taking care.  Just like you would take care of a lost traveler on your night beat, or a neighbor in need.   

As for previously unsuccessful efforts:  if it didn't work, maybe it wasn't the correct course of action.  Taking legitimate complaints to people without the power to fix them doesn't usually do any good.  That doesn't make the complaints any less legitimate, or the authorities who heard them any less just.   

There's this great book by Senator Bob Graham on figuring out how to problem-solve by finding the correct authorities and asking them for concrete, reasonable things within their power based on well-supported facts.  It's *America, the Owner's Manual*:  http://www.graham.centers.ufl.edu/news-owners-manual.html. ;  

The lesson of that book in this context is that we haven't tried the square peg in a square hole just yet.  The Senate Select Committee on Intelligence is the correct authority to assess the NAS report and other evidence regarding the national security threat posed by the polygraph across intelligence and law enforcement agencies.  So send them a postcard already.