[techdmn]

I would argue the opposite, that having members of government who CANNOT be prosecuted like normal citizens is not compatible with democracy. I would think arguments to the contrary would have to assume other impediments to a properly functioning justice system, such as politically motivated prosecutions, widespread selective enforcement, etc.

[trollbridge]

The mechanism is that voters should vote out corrupt congressmen.

This is a classic “who will guard the guards themselves?” dilemma.

[alberto467]

Exactly. And the same is true of the judicial system btw, who must stay separate from other powers, meaning that it also has to police itself, which can create its own issues.

These are just the (little) costs of democracy. If you aren’t ready to pay them, you haven’t really considered the alternatives.