J. Edgar Hoover ran the US for decades and was more powerful than any president. His successor, far less powerful, is in a power struggle with the richest man in the world and a political party that controls all three official branches of government.
The situation looks unpredictable.
It may be worth rereading Mike Lofgren's essay from 11 years ago, before Trump's first campaign, in which he tries to apply the Turkish concept of the "derin devlet" to analyzing the workings of the US government, and why Obama's administration had accomplished so little of what it promised: https://billmoyers.com/2014/02/21/anatomy-of-the-deep-state/
The situation looks unpredictable.
It may be worth rereading Mike Lofgren's essay from 11 years ago, before Trump's first campaign, in which he tries to apply the Turkish concept of the "derin devlet" to analyzing the workings of the US government, and why Obama's administration had accomplished so little of what it promised: https://billmoyers.com/2014/02/21/anatomy-of-the-deep-state/