The first two "voluntary" chips have been implanted in US workers

Extremely disturbing article:

http://news.yahoo.com/s/ap/20070722/ap_on_hi_te/chipping_america;_ylt=AnHSUOtzrB5hQxAMRIGVnaLMWM0F

I'm sure you've all seen this Google video, but this very topic is addressed in:
America: Freedom to Fascism