But that might not matter to McConnell. Depending on the nature of any potential charges, McConnell might still try to ramrod another defective nominee through the nomination process.

If Trump tried to nominate a biased vote after he was charged with possible criminal acts? The Supreme Court could lose whatever credibility they might have left ?

I am worried about McConnell. He is ruthless and evil enough to force such a nominee down the Senate's throat. And although you are totally right about the SC losing any credibility what-so-ever, McConnell won't care. This would be totally uncharted territory, with regard to constitutionality. If the Republicans manage to maintain power (through whatever means), then McConnell's shenanigans likely won't matter and tRump's nominee stays put on the SC. Which would make any legal challenge a wasted effort.

outside of political considerations.

However, there does come a time to be practical. Heard it discussed on news analyst show that Mueller will probably complete his report around September, as Ghouliani said, because he'll want it to go to the agencies & officials before the country is caught up in the mid-terms.

SEPTEMBER.

...that would be part of the investigation, I would think? That would be another obstruction of justice, in my opinion. Also, I think he will follow Mitch McConnell's calendar very closely. He doesn't want his investigation corrupted by political events. I think he is watching it very closely.

As long as Trump is in office you can't stop a nomination. Am I missing something?

I think the only viable and credible way to gain widespread support to stop tRump nominating a Gorsuch clone, is for Mueller to provide rock-solid evidence discrediting the legitimacy of tRump's "win."