European Public Sector Information Platform Topic Report no. 25 (published 25th February 2011). Author: Timothy Vollmer. This topic report examines the background of public sector information (PSI) policy and re-use in the United States, describing the federal, state and local government PSI environments. It explores the impact of these differences against the European framework, especially in relation to economic effects of open access to particular types of PSI, such as weather data. The report also discuss recent developments in the United States relating to PSI re-use, such as Data.gov, the NIH Public Access Policy, and new open licensing requirements for government funded educational resources.