"Four times a year, beginning in June 2011, CRCL [Office for Civil Rights and Civil Liberties] and ICE [Immigration and Customs Enforcement] will examine Secure Communities data to identify law enforcement agencies that might be engaged in improper police practices. The data we analyze is best understood by tracking information through the Secure Communities process. The initial metrics described here will be subject to iterative improvement, over time, as the data sources improve and as we come to understand which anomalies in the data can be hallmarks of law enforcement conduct meriting further examination. We anticipate receiving stakeholder feedback, as well, to assist us in improving our monitoring techniques."
Immigration and Customs Enforcement: www.ice.gov