I'm for the law as long as the information can't be used against the guy in court. That would be a blatant violation of the 5th Amendment, and though I don't give a rat's --s about this terrorist scumbag, I care deeply about the Constitution.
I believe only private conversations between a lawyer and a client can not be used against the client in court. Government supplied phones -- as advertised -- are not private. Anybody hearing these conversations should be allowed to use the evidence in court. If a lawyer and a convict have a conversation on live TV, the evidence from that conversation could still be used against the convict.
The lawyer and the convict can still have private protected conversations -- in person -- in a private room!