Future Supreme Court justices

[McNukes™ #NYCMMWasAHero]

Amy Coney Barrett is the best option. However, the time to nominate her is now(assuming RBG steps down before the 2020 elections). The Republicans will lose senate seats in 2020 and will probably lose majority in 2022.

Not happening. Unless "steps down" is actually code for "dies."

She won't voluntarily step down unless there is a Democratic president. She is 87 years with many health problems. Is it possible that she can be removed if she is not able to do her job?

Who has the authority to do that?

The President can actually nominate them for retirement, and then the Senate can confirm them as a retired judge. Impeachment is another means to remove a member of the Supreme Court.