Which agency's role includes evaluating government programs to ensure accountability?

The Government Accountability Office (GAO) plays a crucial role in evaluating government programs to ensure accountability. As an independent, nonpartisan agency, the GAO assists Congress by auditing and assessing the effectiveness and efficiency of federal programs, identifying areas for improvement, and ensuring that taxpayer dollars are being spent wisely.

Its evaluations often focus on program performance, financial management, and compliance with laws and regulations, providing oversight of federal expenditures and promoting transparency. This foundational mission aligns closely with the concept of accountability, as it ensures that government agencies are held responsible for their operations and outcomes to Congress and the public.

In contrast, the Environmental Protection Agency focuses on environmental protection and regulation, while the Department of Homeland Security is primarily tasked with safeguarding the nation against various threats, including terrorism and disasters. The Federal Bureau of Investigation specializes in criminal investigations and national security matters. Each of these agencies has distinct missions that do not center on program evaluation and accountability in the comprehensive manner that is the core of the GAO's functions.