Capture one or both of the political parties in the United States.That has been in the works for over a half-century. The fact that the HUAC got undermined so quickly was a demonstration of the entrenchment that had already happened back then. Call it the vanguard of the devolution.
My greatest fear, and most likely true prediction: Because this has been underway for a long time, there is zero chance they will allow an interloper to disrupt it. From a corrupted election process, to physical violence, they will not permit Trump to attain office.