Notify U.S. is a free, web-based e-mail registration service that offers U.S. citizens, industries, and organizations an opportunity to review and comment on proposed foreign technical regulations that can affect their businesses and their access to international markets. It is run by the National Institute of Standards and Technology (NIST), which is a part of the U.S. Department of Commerce. The site's purpose is to provide users with updates on World Trade Organization agreements relating to technical barriers to trade. Users must register with the site and be either a U.S. citizen or part of a U.S. organization or industry.