It doesn’t have to be an assassination attempt. Just the fact that there was life-threatening violence in a place that is so close to her that her bodyguard had to be involved brings this issue to mind. Even if a liberal justice dies of natural causes right now, with the Senate’s razor-thin margin, it’s possible for another RBG moment were Trump to win, making SCOTUS an even worse 7-2 supermajority for conservatives. If Supreme Court justices were elected to proportionally represent Americans, there would be at least a 5-4 majority for liberals.