https://www.theatlantic.com/politics/archive/2014/12/a-brief-history-of-the-cias-unpunished-spying-on-the-senate/384003/
In the beginning the idea was that separation of powers would protect the common person because the executive, legislature, and judiciary would each guard their powers jealously. Now I wonder whether today's equivalent is that the CIA, NSA, and FBI, etc. are held back primarily from their competition among one another.
