Labour Party President has offered his resignation, according to Stuff.
To be fair to Williams I don’t think what he did, while wrong, is at the level of resignation needed. But that is on the basis of currently known info. What sort of role he played in trying to get Owen Glenn made a Consul could change that view.
And to be fair to Williams, offering his resignation (even if he knows unlikely to be accepted) is an honourable thing to do. He did stuff up with his comments denying any Glenn donation since 2005 – and this is him accepting accountability for it.