Actually, you're wrong. Just recently Obama opened up data sharing between the NSA, FBI, CIA and hundreds of other agencies.
Source: https://www.engadget.com/2017/01/12/obama-expands-the-nsas-a...
Source: https://www.engadget.com/2017/01/12/obama-expands-the-nsas-a...
Could you imagine if it were that easy to get info on any citizen? What's to stop a spy/traitor from becoming a border patrol guard, downloading all the info and selling it?