Shortly before the trial of Doug Williams for teaching two undercover federal agents how to pass polygraph tests began, AntiPolygraph.org published an archive of 65 so-called "confirmed countermeasure case" files from U.S. Customs and Border Protection. These are polygraph examinations conducted between August 2013 and January 2014, and what they strongly suggest is that contrary to CBP polygraph chief John R. Schwartz's claims, CBP is unable to detect sophisticated polygraph countermeasures, that is, the kind described in AntiPolygraph.org's free book, The Lie Behind the Lie Detector, or in Doug Williams' How to Sting the Polygraph, which remains available on Amazon.com.

For a more detailed discussion of the CBP countermeasure case file archive, see:

https://antipolygraph.org/blog/2015/05/05/on-eve-of-polygraph-trial-leaked-case-...

The file archive itself, which includes polygraph charts, examinee statements, and a CBP case summary for each file, may be downloaded directly here (104 MB .zip file):

https://antipolygraph.org/documents/cbp-confirmed-countermeasure-cases.zip

You'll see that in every case, the examinee did things that someone with an understanding of polygraph procedure and the kind of countermeasures described in The Lie Behind the Lie Detector would not do.

The situation is similar to that with respect to the DIA confirmed countermeasure case archive published by AntiPolygraph.org in April 2015.

Because CBP and DIA polygraph examiners receive their training at the same facility that trains all federal polygraph examiners -- the National Center for Credibility Assessment at Fort Jackson, South Carolina -- it seems likely that the polygraph countermeasures being "detected" by other federal agencies are similarly almost always cases of naive subjects doing things that one would not reasonably expect to help a person pass a polygraph examination.

The U.S. government's polygraph countermeasure detection capability may be well summarized by the Chinese saying, "blind cat catches dead mouse."