“Legal research companies are selling surveillance data and services to U.S. Immigration and Customs Enforcement (ICE) and other law enforcement agencies. This article discusses ethical issues that arise when lawyers buy and use legal research services sold by the vendors that build ICE’s surveillance systems. As the legal profession collectively pays millions of dollars for computer assisted legal research services, lawyers should consider whether doing so in the era of big data policing compromises their confidentiality requirements and their obligation to supervise third party vendors.”