They already are used domestically. One was used in North Dakota to track and arrest armed subjects (http://articles.latimes.com/2011/dec/10/nation/la-na-drone-

They already are used domestically. One was used in North Dakota to track and arrest armed subjects (http://articles.latimes.com/2011/dec/10/nation/la-na-drone-arrest-20111211 http://articles.latimes.com/2011/dec/10/nation/la-na-drone-a...). Another was used in Austin, TX to do recon for a drug raid (http://www.kvue.com/news/DPS-using-drones-to-fight-crime-locally-114518554.html http://www.kvue.com/news/DPS-using-drones-to-fight-crime-loc...). Granted they are not widespread yet, but the seal has definitely been broken.