| | | U.S. Postal Service (USPS) | +18002758777 | Mon-Fri: 8:00 AM - 8:00 PM | Mail services, postage, package tracking |
Federal Communications Commission | +18882255322 | Mon-Fri: 8:00 AM - 8:00 PM | Telecommunications regulation, spectrum management |
Food and Drug | +18884636332 | Mon-Fri: 8:00 AM - 4:30 PM | Food safety, drug regulation, medical devices |
Environmental Protection Agency | +18882759378 | Mon-Fri: 8:00 AM - 5:00 PM | Environmental regulations, pollution control |
Federal Bureau of | +18002255324 | 24/7 | Criminal investigations, national security |
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Department of Homeland | +12022828000 | Mon-Fri: 9:00 AM - 5:00 PM | Border security, immigration, emergency response |
Federal Aviation Administration | +18668355322 | Mon-Fri: 8:00 AM - 4:30 PM | Aviation safety, air traffic control |
United States Department | +12027202791 | Mon-Fri: 8:00 AM - 4:30 PM | Agriculture policy, food safety, nutrition programs |
Bureau of Alcohol, | +18008003855 | Mon-Fri: 8:00 AM - 8:00 PM | Firearms regulation, explosives enforcement |
Transportation Security Administration | +18662899673 | 24/7 | Airport security screening, transportation safety |
Federal Trade Commission | +18773824357 | Mon-Fri: 9:00 AM - 8:00 PM | Consumer protection, antitrust enforcement |
Federal Emergency Management | +18006213362 | 24/7 | Disaster relief, emergency management |
Department of Energy | +12025865000 | Mon-Fri: 8:00 AM - 5:00 PM | Energy policy, nuclear safety, research |
Internal Revenue Service | +18008291040 | Mon-Fri: 7:00 AM - 7:00 PM | Tax information, refunds, filing assistance |