Hi all
Any "Law enfocement" - especially these days is a question of checks and balances.
In the last analysis Governments can always use "their get out of Jail Free Card" -- National Security -- but going down this route is a slippery slope that will end in a total suspension of any sort of Human Rights even in the USA.

I'm not sure that acting as an "Agent Provocateur" is the best or even a legal way of catching criminals -- some clever lawyer will probably get any type of case thrown out of Court anyway assuming it gets as far as a public court.

Naming and shaming the individual concerned over the web would probably be a better solution -- the "Court of Public Opinion" is usually a pretty good guide in this type of depravity.

Cheers
jimbo