In the United States, libraries are responsible for supporting the First Amendment and how it relates to their facilities through policies such as the American Library Association's Library Bill of Rights. The right to freedom of speech and information is significant to public libraries; one way of upholding this doctrine is to protect the privacy of all patrons that belong to a library. The concept of confidentiality is important because the First Amendment may be violated if a patron's information could possibly be shared. Patrons may not feel free to check out certain materials for fear it would later be revealed. Members of society need to be reassured that even if they borrow controversial or embarrassing materials, their privacy will be upheld.