On December 23, 2011, the Department of Homeland Security (DHS) released the U Visa Law Enforcement Certification Resource Guide. This guide is a new tool being made available to law enforcement officials to support investigations and prosecutions involving qualified immigrant victims of crime. Included in the guide is information about U visa requirements, the law enforcement certification process, and answers to frequently asked questions from law enforcement agencies. In a department-wide effort, DHS is providing this guide in response to requests for more guidance from law enforcement officials and domestic violence advocates alike.
For more information see a blog post here, and the Resource Guide here.