See Toni Locy's article, "Anthrax investigators tail scientist '24/7'" in the 29 May 2003 edition of USA Today. Regarding Steven Hatfill's FBI polygraph interrogation, Locy writes:


Quote:

Hatfill is among dozens of scientists who have taken polygraphs at the FBI's request. An FBI analysis suggested he was "evasive" when asked a question about the attacks, a fifth source close to the probe says. Most states ban polygraph results from court because the tests are considered unreliable.

One reason for anyone to refuse any polygraph "test" in connection with any criminal investigation is that the results may be (mis)used by "anonymous officials" in an attempt to smear a suspect in the press, as seems to be the case here. I'm glad to note that Locy appears to be skeptical of polygraphy.