This review, I think, captures the core concept of Talbot’s book: The American constitutional system was disrupted on November 22, 1963 and never repaired.
Talbot’s book makes what is perhaps an even more important claim — that Dulles and his allies oversaw a turning point in American history, when the democratic rule of the many became a plutocracy, the rule of the wealthy few.
Source: New Book Ties Former CIA Director To American Corporatocracy, JFK Assassination