Luna Starfield immediately began playing the evidence in this hall, evidence that the member had just violated federal law. And federal law is never merciful; capital punishment is not the worst of the penalties, there are far worse kinds of punishment.
Giving him death was actually quite lenient by Finn Lewis; according to federal law, these crimes were sufficient for him to be exiled for a hundred years. Don't assume that a hundred years of exile sounds like a good thing, at least not death. But you would be wrong, because exile here doesn't mean being dumped on some backward planet.
Instead, your body would be specially processed and frozen while your consciousness remained active. That is to say, you would be alive, and then you'd be thrown into the void of space, where there was nothing around but pitch blackness.