So, in my world, nuclear war happened, and the US has been forced to retreat into underground bases and shelters, were they stay for the next 90 years.
During their time underground, they grow increasingly Nazi-esque. Xenophobia, fascism, and so on. They still have the presidential office, along with the secret service, who are armed with the most advanced weapons the Bunker can give. But, the Secret Servicemen often, politically meddle, killing of new presidents and candidates, giving “impeachment” a new meaning.
My question is, after all of this, why would the citizens of the Bunker not reform the Secret Service?