I'll tell you how it works.....even though the Govt is not specifically allowed to eavesdrop on private conversations without 'just cause', they will find a way to use what they overhear 'accidently'.

Many years ago, a couple were having private, amorous, marital relations..(as in SEX)..in their own bedroom, when a young neighbor boy wandered in thru an unlocked door and saw them. When he described what he saw, the couple was arrested, tried & convicted of some sort of 'crime against nature'..(oral sodomy, I believe)....

*THIS* is the attitude which prevails among some of the listeners, and they will find an excuse to use information, even if they do not admit how they first obtained it....Yeah, I know... "that's far-fetched in this day & age"...pooh!...just watch...