"Each U.S. Attorney's Office deals with a wide variety of cases and handles a mixture of simple and complex litigation. In addition, each United States Attorney exercises wide discretion in the use of his/her resources to further the priorities of the local jurisdictions and to meet the needs of their communities. This report captures the results of those efforts during Fiscal Year 2012, and presents both national and district caseload data in statistical tables and charts."
Executive Office for U.S. Attorneys: http://www.justice.gov/usao/