How recently are you talking here? It’s been a conservative majority for over 5 decades.

> De-politicising the courts could be electorally advantageous for both sides.

Perhaps in the sense that being more consistently moderate would be advantageous for either party in seeking to win median voters, but I think this is not true in terms of the party base dynamics that actually drive most of policy and candidate selection. The Republican base is _thrilled_ with Trump and Mitchell’s maneuvering to secure a decades-long unshakable majority. Campaigning as a Republican on “I would like to reverse the biggest win in our lifetimes” would be political suicide, and your primary opponents would be the most well-funded in the country.

> Because that’s obviously partisan

The last bill I saw had the change kick in _after_ the existing justices vacated their seats, so as to not be seen to attack the existing majority. Even then it was DoA with zero Republican support. And that should not surprise you.

I like your proposal, but I stand by my claim that it’s politically impossible as a bipartisan policy for this generation. The only way we get Supreme Court reform is if they overreach, moderates get fed up with strong conservative rulings, Dems win a landslide with a mandate, and pass a partisan reform bill.