Bodhi herself is magic-resistant, in addition to being 100% resistant to cold and electrcity. Most of the other vampires are 50% resistant to cold and electricity. All of them are immune to Charm, Fear, Hold, and Sleep spells. A few, like Tanova, can cast mage spells.
There's nothing a little poison
What happened here was the gradual habituation of the people, ... to receiving decisions deliberated in secret; to believing that the situation was so complicated that the government had to act on information which the people could not understand, or so dangerous that, even if he people could understand it, it could not be released because of national security.