True. However, I also think common sense dictates that if MG was offered a polygraph, BM would have also been offered to test.
I'm still trying to figure out why anyone other than BM would be offered a polygraph test. They aren't just offered to any witness, or to both sides of a swearing contest.
Controversies about use of the polygraph have led to the development of model policies for their use. I'm not sure CCSO has such a policy, but here is an excerpt from one of the models, as to when a polygraph will be authorized:
Approval Criteria
When authorizing an examination, the approval authority should:
1) Determine that investigation by other means has been as thorough as circumstances reasonably permit. Polygraph effectiveness and accuracy
are greatest when relevant issues and the examinee's ~knowledge of the matter under
investigation have been narrowly defined and well-defined.
2) Insure that the proposed examinee has been interviewed and that consistent with the
circumstances of the case,
the development of additional information by means of polygraph is essential and timely for further conduct of the investigation. Use of polygraph should not be a "last resort" effort to salvage a case. The decision as to when polygraph should be used in the investigative process must be based on individual case circumstances-·weighing the exigencies of the situation against the improved capability of the technique to fully resolve issues resulting from greater investigative thoroughness.
3)
Verify that there is reasonable cause to believe the person to be examined has knowledge of or was involved in the matter under investigation, or is withholding information relevant to the investigation. Dragnet-type screening of large numbers of suspects should be avoided.
4) Consideration should also be given to the following:
-Age factor (a waiver must be obtained from a parent or guardian if a minor is examined);
-Known physical or mental abnormalities;
-Ensuring full security for an examinee in custody;
-Ensuring pending prosecution is not jeopardized; and
-Results of any prior polygraph examinations afforded the
examinee.