How can they rubber stamp something that doesn't exist? Since this is "warrantless"?
If they rubber stamped a warrant, then it wasn't warrantless.
So what's your argument? That warrantless actions are going on....or that the warrants for the action are obtained with a rubber stamp?
Because as it stands, you seem to be making the both arguments, but the second counters the first.
The Federal justice system also has an incredibly high conviction rate compared to other matters of law. Assuming it's because it's corrupt, just like you seem to be assuming with the FISA Courts, is poor logic. COULD that be one option? Sure. Another option could be that, much like the court system, they don't bother bringing many instances to the FISA court unless they're exceedingly confident that it'll pass.