Originally Posted by Bart
...What's needed instead is that they undergo a thorough background investigation. I do disagree with exempting anyone with a top-secret security clearance from screening. I've conducted a significant number of criminal and counterintelligence investigations with subjects who had such clearances.
Excluding those with high-level clearances (or perhaps those with polygraphs on file) does offer one advantage - it removes a well-investigated, low-risk population from the screening pool without regard to anything that could be considered prejudicial (race, religion, sex, etc). Of course, it would concern me a bit if a large number of the CIs you did on these individuals yielded derogatory information
