US Department of State’s website for TN Visas qualified NAFTA professional (TN) visas TN/TD TN visa category TN visa category Visas for Canadian and Mexican NAFTA Professional Workers U.S. Department of State website visa interview travel.state.gov Department of State TN visa section NAFTA professional (TN) visa TN/TD NAFTA professional workers: Mexico, Canada According to the U.S. Department of State Form DS-160 professionals Mexican and Canadian NAFTA Professional Worker TN Visas: Professionals Under NAFTA visa Approved list of occupations. website TN visa category e.g. NAFTA TN visa category TN/TD