The Tax Division of the Department of Justice (Department) represents the Federal Government in nearly all civil tax cases in the district courts, the courts of appeals, and the Claims Court, and receives copies of all opinions and orders issued by those courts in such cases. Respondent publishes a weekly magazine containing summaries of recent federal-court tax decisions, supplemented by full texts of those decisions in microfiche form. Respondent also publishes a daily electronic data base that includes summaries and full texts of recent federal-court tax decisions. After the Department denied its request under the Freedom of Information Act (FOIA) to make available all district court tax opinions and final orders received by the Tax Division in a certain period, respondent appealed administratively. While the appeal was pending, respondent agreed to withdraw its request in return for access to the Tax Divisions weekly log of federal-court tax cases. Eventually, however, respondent became frustrated with the process of obtaining copi