Pro hac vice (IPA: [pr?? h�k 'vi:t?ei]), Latin: "for this occasion" or "for this event" (literally, "for this turn"),^[1] is a legal term usually referring to a lawyer who has not been admitted to practice in a certain jurisdiction but has been allowed to participate in a particular case in that jurisdiction.� -wikipedia

Every State in the U.S. has their own licensing, and self regulation scheme.� Lawyers set up the rules to benefit their industry, but even in such a peculiar notion of allowing only lawyers to police themselves, there are limits.� Thus, a lawyer registered to practise law in California can not automatically practise law in any other state, like Delaware, New York, or Michigan.� Each state crafts their own rules for allowing a foreign lawyer to appear, under pro hac vice.� Thankfully, this process opens up the door to allow any given state to apply their local state professional ethics and conflict of interest laws to the visitng lawyers.� In fact, pro hac vice allows each state a safety net to filter out dirty lawyers, and even prosecute them.

I don't know,
� but I've been told
Pro Hac Vice
� is a double edged sword
������ - Led Zeppelin