The creation of these agencies is akin to the old nursery rhyme, There was an old lady who swallowed a fly.
The was an old congress that made the SS, I don't know why they made the SS, oh what a mess.
There was an old congress that made FBI, it poked and prodded and festered inside. They made FBI to catch the SS, I don't know why they made the SS, oh what a mess.
There was an old congress that made OSS how obsessed to make OSS. They made OSS to catch FBI. They made FBI to catch the SS. I don't why they made the SS, oh what a mess.
There was an old congress that made CIA. Fancy way to make CIA. They made CIA to catch OSS. They made OSS to catch FBI. They made FBI to catch the SS. I don't know why they made the SS, oh what a mess.
There was an old congress that made NSA, what a forray to make NSA. They made NSA to catch CIA. They made CIA to catch OSS. They made OSS to catch FBI. They made FBI to catch the SS, oh what a mess.
There was an old congress that made DIA, what a day to make DIA. They made DIA to catch NSA. They made NSA to catch CIA. They made CIA to catch OSS. They made OSS to catch FBI. They made FBI to catch the SS, oh what a mess.
There was an old congress that made DHS. Nevertheless they made DHS.
There are some functions these agencies do that are necessary but because of how and why they were created they have become corrupt and are controlling things from behind the New Iron Curtain.