I was under the impression that Girl Scout cookies are locally sourced, meaning that any contamination (if there really was any) would be a local issue, and not national. Unless, of course, one of the actual ingredients was lead, which to me seems ridiculously unlikely.
Sorry – by locally sourced, I mean that they locate some sort of cookie maker in the area (state? region? county?) to produce the cookies for them. It isn’t a single organization/location that creates the cookies, so contamination wouldn’t be across all cookies distributed. At least, that’s how I recall hearing it, long ago.