Clients of TRG's courses and seminars include personnel from almost every Federal regulatory agency , as well as U.S. Congressional staff, employees of State agencies, regulated industries, trade groups, public interest groups, tribal governments, foreign regulatory agencies, law firms, and other individuals seeking to participate in and understand the Federal rulemaking process. Since TRG's Federal agency clients come from almost every regulatory agency in the Federal Government, to see the most complete list of TRG's Federal clients, you should look at the Office of the Federal Register’s list of Federal agencies (https://www.federalregister.gov/agencies).

The list below is limited to Federal agencies that hired TRG to provide on-site training.

• Agency for International Development (USAID)
• Commodity Futures Trading Commission (CFTC)
• Department of Agriculture (USDA)
• Agricultural Marketing Service (AMS)
• Animal and Plant Inspection Service (APHIS)
• Food and Nutrition Service (FNS)
• Food Safety and Inspection Service (FSIS)
• Forest Service (FS)
• Rural Development (RD)
• Department of Commerce (DOC)
• Bureau of Industry and Security (BIS)
• National Oceanic and Atmospheric Administration (NOAA)
• Patent and Trademark Office (PTO)
• Department of Defense (DoD)
• Department of the Army (Army)
• Defense Health Agency (DHA)
• Department of Health and Human Services (HHS)
• Centers for Disease Control and Prevention (CDC)
• Centers for Medicare and Medicaid Services (CMS)
• Food and Drug Administration (FDA)
• Center for Biologics Evaluation and Research (CBER)
• Center for Drug Evaluation and Research (CDER)
• Center for Food Safety and Applied Nutrition (CFSAN)
• Department of Homeland Security (DHS)
• Citizenship and Immigration Services (USCIS)
• Customs and Border Protection (CBP)
• Coast Guard (USCG)
• Federal Emergency Management Agency (FEMA)
• Transportation Security Administration (TSA)
• Department of Housing and Urban Development (HUD)
• Department of Interior (DOI)
• Bureau of Indian Affairs (BIA)
• Bureau of Reclamation (USBR)
• Bureau of Ocean Energy Management (BOEM) (formerly MMS & BOEMRE)
• Bureau of Safety and Environmental Enforcement (BSEE)
• National Park Service (NPS)
• Office of Natural Resources Revenue (ONRR)
• Department of Justice (DOJ)
• Drug Enforcement Administration (DEA)
• Executive Office for Immigration Review (EOIR)
• Department of Labor (DOL)
• Employment and Training Adminisgtration (ETA)
• Department of State (DOS)
• Department of Transportation (DOT)
• Federal Aviation Administration (FAA)
• Federal Motor Carrier Safety Administration (FMCSA)
• Federal Railroad Administration (FRA)
• Federal Transit Administration (FTA)
• Pipeline and Hazardous Materials Safety Administration (PHMSA)
• Department of Veterans Affairs (VA)
• Environmental Protection Agency (EPA)
• Federal Communications Commission (FCC)
• Federal Deposit Insurance Corporation (FDIC)
• Federal Election Commission (FEC)
• Federal Energy Regulatory Commission (FERC)
• National Aeronautics and Space Administration (NASA)
• National Labor Relations Board (NLRB)
• Nuclear Regulatory Commission (NRC)
• Postal Regulatory Commission (PRC)
• Social Security Administration (SSA)