You are missing the point entirely. If there's no path away from the right and towards the left, nobody who wants to change their stance will feel it is safe to do so.

We shouldn't even need to rely on the courts, congress could stand up and repeal it tomorrow if the political will existed.

their minds distorted by ideology and their bodies by poverty and ruthless 'training' to make them compliant. Without force, the majority of human beings only seek to protect themselves, and are traumatized by the act of killing."

-A fictitious philosopher from the game Talos Principle II

Have there been any efforts to repeal this 200+ year old act? If not, why not?

But that's not enough. You've already thought too much about it and there's nothing new or interesting left for you. So you have no motivation to continue obsessing, no reason to tell anyone or write it down. You forget it and move on.

Wash, rinse, and repeat every day for your entire life.