Because he's the only candidate I see who I believe when he says "his" justice department will pursue and prosecute the crimes of the state department, IRS, ATF and others to the fullest extent of the law no matter where that path leads. (Meaning he doesn't care if republicans are also found to be involved and prosecuted)
If you want to truly clean up Washington and return to constitutional governance, Cruz is the guy.
![source: imgur.com](http://i.imgur.com/M1ZdiQi.jpg)