What are the chances of getting hired by a federal law enforcement agency after testing inconclusive? What are the remedies if denied employment?
In hiding,
It is overwhelmingly likely that you will not be hired with an inconclusive result--you need to "pass." Some federal agencies will give you numerous chances to re-test after being deemed inconclusive. Others will disqualify you without any right of appeal.
For grievance proceedures, I suggest that you read _The Lie Behind the Lie Detector_. It's available as a free download at:
http://www.antipolygraph.org/pubs.shtml