Federal agencies are specialized organizations within the U.S. government that focus on specific areas of public policy, government function, and service delivery. They are responsible for implementing laws, regulations, and programs that affect the lives of citizens. Examples of federal agencies include the Environmental Protection Agency (EPA), which protects the environment, and the Federal Bureau of Investigation (FBI), which handles national security and law enforcement. These agencies operate under the authority of the President and are funded by taxpayer dollars. Each agency has its own mission, staff, and budget, allowing them to address various issues like health, education, and transportation effectively.