Comment by jfengel

Impeached, possibly. Conviction is effectively impossible.

That illustrates the structural problem. Congress was designed to have a high bar for action. But the bar is so high that it can't balance the other branches.

I'd argue that no system will work when so many voters are willing to overlook obvious crimes in order to remain in power. But even in less pathological circumstances, the legislative branch had too many internal checks to also participate in external ones.