if digging deep enough would provide the evidences then the evidences would be public knowledge by now.
It is impossible to hide something that requires that many people involved. A mathematic approach on this topic showed that no large scale secret would remain secret for longer than 5 years. In terms of a deep state would be easily visible via international money transactions.
What you call deep state is nothing but ordinary capitalism. Which btw. in my eyes is the more problematic issue.
And in the United States this sick uncontrolled capitalism is made even worse by a two party system and a centuries old fucked up voting system.