STEVE INSKEEP, Host:
From Dallas, NPR's Wade Goodwyn reports.
WADE GOODWYN: But like some "CSI" episode, what was interesting to federal investigators was not the negligent bus driver but the bus itself. Among other things, it turned out it had been illegally driven in from Mexico.
DEBBIE HERSMAN: What our investigators found is that there were some loopholes in the regulatory procedures that were big enough to drive a bus through, and that's exactly what they did.
GOODWYN: Wade Goodwyn, NPR News, Dallas.
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