Which agency is responsible for regulating civil aviation in the United States?

The Federal Aviation Administration (FAA) is the agency responsible for regulating civil aviation in the United States. Its primary roles include overseeing the safety of civil aviation, enforcing regulations, and managing air traffic to ensure that aircraft operate safely and efficiently. The FAA establishes standards for aircraft operations, pilot certification, and maintenance practices, thereby playing a crucial role in making air travel safe and orderly.

The agency also works on developing aviation policies and funding for airports and supporting aviation technology development. By ensuring that all aspects of air travel adhere to strict safety standards, the FAA helps to maintain a high level of safety and reliability in the aviation industry.