George Maschke writes: A mid-career veteran of the FBI has been suspended without pay and faces revocation of his/her security clearance (which would inevitably lead to termination) because the Bureau's polygraph operators allege he/she tried to beat the polygraph. The case is currently the subject of an unpublicized Congressional inquiry. Retired FBI scientist, supervisory special agent, and polygraph critic Dr. Drew Richardson has publicly shared a memorandum he wrote in support of the accused in this case, which has heretofore been shrouded in secrecy. It should be borne in mind that polygraphy is vulnerable to simple countermeasures (PDF, see Ch. 4) that polygraph operators cannot detect. This case is yet another example of how the pseudoscience of polygraphy endangers virtually everyone with a high-level security clearance.