Neal Katyal actually said...

I think the indictment of the very least has to happen.

But suppose there were an indictment and the president says, 'I actually have other things to do'. So, we would suspend the statute of limit...

There are statutes of limitations and other things that would otherwise kick in and defend the president and immunize them from all potentia...

I think the interesting question is if Mueller decides that there is information sufficient to indict the president can he do so?