[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.