Public comment is a specific term of art used by various government agencies in the United States, a constitutional democratic republic, in several circumstances. It is sometimes called "vox populi". Generally these circumstances are open public meetings of government bodies which set aside time for oral public comments, or comments, usually upon documents. Such documents may either be reports such as Draft Environmental Impact Reports (DEIR's) or new regulations. There is typically a notice which is posted on the web and mailed to more or less ad hoc lists of interested parties known to the government agencies. If there is to be a change of regulations, there will be a formal notice of proposed rulemaking.