>I'm not going to claim to be an american law expert, but when the agencies can just say "nope" to evidence against them in said court of law, it becomes hard to claim strong legal protections. I may be wrong and misunderstanding the law, but it does seem like that. And as a shot in the dark here I doubt it got any better after the patriot act.
This is nonsense. In your example the court said "nope" to the defendant trying to push a conspiracy theory which could not possibly have exonerated him.
Here's a decent read on the Nacchio case without weird conspiracy theory bullshit https://truthonthemarket.com/2008/03/31/some-thoughts-on-the...
The uncertainty of the sentence aside we can zoom out and see that asking to follow legal processes that every single one of those companies should be following in the first place can very well cause retaliation from the NSA, so all else aside invoking legal protections sure does seem to be bad for companies.
From the court decision which you didn't bother to read:
>Even if the classified information were presented and established what he said it would, it could not exonerate Mr. Nacchio as he claims. Essentially, Mr. Nacchio argued that undisclosed positive information can be used as a defense to a charge of trading on undisclosed negative information. We disagree. … If an insider trades on the basis of his perception of the net effect of two bits of material undisclosed information, he has violated the law in two respects, not none.
"Joseph P. Nacchio (born June 22, 1949 in Brooklyn, New York) is an American executive... Nacchio was convicted of insider trading during his time heading Qwest. He claimed in court, with documentation, that his was the only company to demand legal authority for surreptitious mass surveillance demanded by the NSA which began prior to the 11 September 2001 attacks.[1]
He was convicted of 19 counts of insider trading in Qwest stock on April 19, 2007[2] – charges his defense team claimed were U.S. government retaliation for his refusal to give customer data to the National Security Agency in February, 2001.[3] This defense was not admissible in court because the U.S. Department of Justice filed an in limine motion,[4] which is often used in national security cases, to exclude information which may reveal state secrets. Information from the Classified Information Procedures Act hearings in Nacchio's case was likewise ruled inadmissible.[5] " [0]
[0]: https://en.wikipedia.org/wiki/Joseph_Nacchio