| | | United States Secret Service | +12024065708 | 24/7 | Presidential protection |
National Institutes of | +13014964000 | Mon-Fri: 8:30 AM - 5:00 PM | Biomedical research, medical studies |
Securities and Exchange | +18007320330 | Mon-Fri: 9:00 AM - 5:00 PM | Securities regulation, investor protection |
Environmental Protection Agency | +18882759378 | Mon-Fri: 8:00 AM - 5:00 PM | Environmental regulations, pollution control |
Food and Drug | +18884636332 | Mon-Fri: 8:00 AM - 4:30 PM | Food safety, drug regulation, medical devices |
U.S. Postal Service (USPS) | +18002758777 | Mon-Fri: 8:00 AM - 8:00 PM | Mail services, postage, package tracking |
Internal Revenue Service | +18008291040 | Mon-Fri: 7:00 AM - 7:00 PM | Tax information, refunds, filing assistance |
National Aeronautics and | +12023580001 | Mon-Fri: 9:00 AM - 5:00 PM | Space exploration, aeronautics research |
United States Department | +12027202791 | Mon-Fri: 8:00 AM - 4:30 PM | Agriculture policy, food safety, nutrition programs |
Centers for Disease | +18002324636 | 24/7 | Disease control, public health research |
Consumer Financial Protection | +18554112372 | Mon-Fri: 8:00 AM - 8:00 PM | Consumer financial protection, financial education |
Federal Trade Commission | +18773824357 | Mon-Fri: 9:00 AM - 8:00 PM | Consumer protection, antitrust enforcement |
Department of Health | +18776966775 | Mon-Fri: 8:00 AM - 8:00 PM | Healthcare, public health, social services |
Department of Homeland | +12022828000 | Mon-Fri: 9:00 AM - 5:00 PM | Border security, immigration, emergency response |
Department of Education | +18008725327 | Mon-Fri: 8:00 AM - 8:00 PM | Education policy, student loans, grants |
Federal Aviation Administration | +18668355322 | Mon-Fri: 8:00 AM - 4:30 PM | Aviation safety, air traffic control |
Federal Trade Commission | +18773824357 | Mon-Fri: 9:00 AM - 8:00 PM | Consumer protection, antitrust enforcement |