If a co-equal branch of the government can not rein in the corruption of the SCOTUS, then it is weak
And not really co-equal.
If a co-equal branch of the government is not willing to rein in the corruption of the SCOTUS, then it is an accessory to that corruption, and a question of its legitimacy is on the table as well.
At minimum, the Crow and Leonard should be criminally investigated because it all looks like a bribe. Investigating the bribers will at least mean that the flow of money to the Supreme Court will trickle and stop.
We can't even impeach. Republicans will never hold SCOTUS accountable.
Weak or not, it's only Republicans who refuse to take action if Dems could, they'd do something about it.
I believe the Founder's idea was the Legislative, consisting of elected representatives, was meant to be at least slightly paramount over the other two.