This would be a reasonable explanation for the book about the last President but if he can do it, so can they? Why not just send one young hitlery back to guide herself out of a laughable effort during the last election?
Or maybe all of her clones aren't clones at all but a result of all of her attempts to change the timeline
I argue it would be this one because we see them piling up (due to failures to change the winning timeline)