A good question. A better one is what does he do that is not conservative? Maybe work for a law firm that specializes in protecting the oligarchy? Maybe spend the rest of his adult life working for the government? Maybe daydream of being president from age 13? Maybe supporting crony trade? Maybe supporting the Corker Bill? Maybe advocating expansion of the H1B program (I know, he backed down after he realized that the proposal would harm his presidential ambitions)? More? I have to make a meeting at school.
My understanding is that Cruz is a Senator, and therefore works for the People of the US and Texas.