Hello.
The Supreme Court of the US has decided to let stand a ruling by refusing to hear any appeals.
http://news.newamericamedia.org/news...e05df23b6e897f
This ruling opens the way for the public a large to sue a police officer irrespective of any state immunity.
Bottom line is that a cop is using deadly force when he uses a TASER and thus the same protections to the use of any firearms apply.