What case/precedent would this supreme court never touch or overturn: serious question

[Jalether]

Do you think there's a case or precedent that's untouchable to this SC right now if republicans campaign to have it overturned

if yes, List them

Note, cases and precedent that favour the right like 2nd ammendment,electoral college etc doesn't count

 

[WIA20XX]

Citizens United -

Citizens United Explained

The 2010 Supreme Court decision further tilted political influence toward wealthy donors and corporations.

www.brennancenter.org

The case that allows companies to give money like people. I'd throw in a City Of New London as well, but most people don't care about for profit eminent domain.