"Why are they still being "observed", instead of raided, arrested, and bulldozed?"My "optimistic" (very ironic, that) answer is that through surveilance we hope to locate the WMDs that are already here.
Not that my optimism puts me at any ease.
If there are already WMDs here, how can anybody reasonably argue against the use at least of sodium pentathol?
The WMD already here could be kilos and kilos of anthrax in glass jar "bombs" to fill thousands of envelopes, to to be thrown down on subway tracks, or into air intakes for buildings and sports arenas.
If they are dispersed to a dozen agents with no contact with each other, I can't see a solution.