Until very recently Congress were the only individuals exempt from insider trading laws.
They effectively still are. A key part of the STOCK act was rolled back after the election.
Therefore, Congress will pass a law making itself exempt from CIA/NSA spying and the rest of the country be damned.
Interestingly, the UK already has something like this, it's called the Wilson Doctrine and is not a law but rather a promise the Prime Minister makes to MP's by tradition.