Then, you haven't been paying attention in class, teacher. It has been established that terrorists are rather fond of using their lawyers to funnel information out of prison to other terrorists to use in terrorist activities. These recordings cannot be used by, cannot even be shared with, prosecutors unless these recordings contain information of a conspiracy to committ future terrorist acts.
You see, without this law, a terrorist could name any outside plotter as his attorney and use that person to convey any information he desired.
And, prior to the enactment of this statute, all communications were monitored except those involving an attorney for all prisoners. I suspose you have a problem with drug lords running drug rings from inside prison too?
(I assume my corrections are proper.) Yes, of course I have a problem with prisoners committing illegal acts, just as I have a problem with free citizens committing illegal acts. However, just because someone MIGHT be committing an illegal act does not mean that we should rescind our Rights in the hopes of making the job of the police easier. (We should do that in hundreds of others ways, but not this one.) If we do, then it is a short hop to say that since the freed drug dealers use the phone to do their deals, the police should monitor those calls as well. Then, of course, those who are suspected of other crimes will be similarly monitored... simply put, it's a bad idea. It assumes that all of those conversations contain illegal activity, without any proof beforehand. Let's find other ways to police them... ways that won't restrict the rights of those who are not committing crimes, and that won't erode the concept of 'innocent until proven guilty'. (How about punishing those lawyers who make relay communications, for example?)
(Yes, I am aware that those in prison have been convicted of something already... that does not mean that their every action forevermore will be an illegal one. The guards do not have the right to monitor their conversations, no matter how vile and heinous the dirt-bag might be.)