Guam may each designate one library if vacancies exist. The governor of the U.S. Virgin Islands may designate two libraries if vacancies exist (one each for Saint Thomas and Saint Croix). The mayor of the District of Columbia may also designate two libraries if vacancies exist. A library may be given FDLP status via "by-law designations" (Title 44 of the U.S. Code). Any library that meets the following criteria automatically qualifies for FDLP status: Land-grant colleges and universities () Libraries of federal agencies, i.e. executive departments, service academies, independent agencies () Highest appellate court of a state () Accredited law schools () Responsibilities and maintaining depository status Libraries with depository status are required to provide the documents received at no cost to their patrons. Though they receive the publications free of charge, depository libraries are responsible for the costs of processing the items and making them available. All depository libraries must make their collections of these documents available to the general public, and the services provided for government documents must be on par with the services offered to the primary users of a library. Circulation policies for government documents, however, are established by each library itself. Libraries may house the materials however they like; for example, they may separate the government documents from the rest of their collection or they may integrate them. A library cannot filter Internet search results at public access stations as access to health or biological science articles may not be infringed upon. Depository libraries must maintain collections of at least 10,000 books, not including the collection of government documents. A depository library may voluntarily resign from its position as a depository library, or it may be stripped of its depository status by the Superintendent of Documents if it does not carry out its responsibilities as enumerated in the U.S. Code. In either case, the library must properly dispose of the government documents it acquired while part of the program as these publications are the property of the U.S. Government. The documents would generally be returned to the state regional library and then redistributed to selected libraries within the state. FDLP collections Libraries are required to maintain a series of titles known as the FDLP Basic Collection. Beyond this, libraries order the materials that best suit the needs of their patrons; there is no selection percentage criterion that must be met. The FDLP offers the opportunity