This has long been my suspicion, but I could never find any public info to corroborate it.
Livingstone was a bar-bouncer somewhere in the Oakland area of Pittsburgh, about a 5 minute walk from the Bureau of Mines where Laura Crabtree (later Callahan) worked. I figured the odds of both of these under qualified people ending up at the Clinton WH by coincidence was just stretching credulity to the limit.
There had to be some connection; I'd be curious to know what it was.