The only reason this continues to go on is that no one is brave enough to risk arrest and just publicly read the full contents of these NSLs when they get them.

The only reason this continues to go on is that no one is brave enough to risk arrest and just publicly read the full contents of these NSLs when they get them. Gag orders have only been declared constitutional when they are used to protect someones right to a fair trial. No one has ever challenged a gag order that protects a police investigation. It is much easier to challenge these gag laws when you have been personally charged with violating them, then you have a criminal trial you can appeal and escalate through to federal appeals and the supreme court. Otherwise it is just civil suits that can be thrown out easily as you cant justify why you need to take this to trial because you are not suffering any monetary damages.