If they have a serious argument backed by evidence, they should make it public. Hillary Clinton may have a personal concern about the issue but it's a very serious issue for all Americans (and the world). She shouldn't have a veto.
Absolutely. Regardless of how likely or unlikely manipulation is, an independent group should be able to request an audit.
If for not other reason than she could be silenced by a tacitly threatening to endless prosecute and summon before congress on some unrelated matter if she makes any trouble.
A very good point.