Let's say the Senate indeed opts to remove Roberts from office and 2/3rds of the Senate convicts him.
What judge appointed by President Obama to fill Robert's vacant seat will be an improvement?
Thats a good question.
An impeachment of Justice Roberts would probably open the eyes of a bunch of low-information voters to widespread federal government corruption, not that they would necessarily care. But if corrupt senators perceived that they would have to remove Roberts from bench in order to get reelected then they just might do so.
And then there’s the question if such an impeachment and removal from office should happen before or after the ’16 elections if the job can be done before the elections anyway. I don’t remember how long it took the House to impeach Clinton. And then there would be further delay if the Senate actually did its job and seriously considered removing Roberts.
So next president might have actually have the job of nominating a hypothetically impeached Roberts.
Again, that’s a good question.