Bullock has advocated against government use of civil forfeiture. He has said that when the police pull drivers over for minor traffic infractions and seize their cash, they do not "respect fundamental notions of due process." He represented Russ Caswell when the police tried to seize Caswell's motel in Tewksbury, Massachusetts after incidents of illegal drug activity on the premises. He called the practice of equitable sharing, in which state and federal law enforcement share the proceeds of seized assets, a violation of federalism. He has been involved in First Amendment and commercial speech cases. He is an advocate for parental rights. He has shared his views on constitutional issues in publications such as "The New York Times" and "The Wall Street Journal" as well as in broadcast media such as "60 Minutes", "ABC Nightly News", and National Public Radio.