Shorten himself has now tabled the evidence that he did renounce his British citizenship by descent shortly before he first ran for Parliament, so he's in the clear personally.
But there are a number of Labor MPs about whom legitimate questions have been raised who still have not done so, and the ALP is simply insisting that their own internal procedures mean they are in the clear and proof doesn't need to be presented.
I'll believe that when I see it and not a moment before...