translation of one passage of In Catilinam 1

[achilles005]

Non deest rei publicae consilium, neque auctoritas huius ordinis;

I think auctoritas should be auctoritatem as an accusative case. Why Cicero used the case of nominative?

I am a latin beginner from China. I think Latin is beautiful and powerful.

[DescensusFacilis]

Auctoritas is the subject of non deest, just like consilium .