In a play, you know where you start and end and all the stops you have to do, but in television, you can't construct this carefully planned out arc for your character. You often get a script and you're shooting it two days later, and you don't know what's going to happen next. It's one of the harder things that I've done.
We often imagine that the court serves as a sort of neutral umpire controlling the warring political branches. But this is mostly myth. The justices of the Supreme Court are themselves actors in the struggle for power, and when they intervene, they think carefully about how their decisions will affect the court's own legitimacy and authority.