Who has the authority to enforce compliance with agreements made in federal grants related to airport development?

The authority to enforce compliance with agreements made in federal grants related to airport development primarily lies with the Federal Aviation Administration (FAA). The FAA is responsible for overseeing the use of federal funds in airport projects to ensure that recipients adhere to the terms and conditions specified in grant agreements. This includes monitoring compliance with regulations covering safety, environmental impacts, and operational standards.

As the federal agency tasked with regulating and promoting civil aviation, the FAA has the jurisdiction necessary to ensure that airports fulfill their obligations, which are typically outlined in grant assurances. These assurances can include requirements related to financial management, project performance, and accessibility, among other things. Given the FAA's role, it possesses the tools and authority to enforce the terms of these agreements, including taking action if violations occur.

The other entities mentioned, such as a city mayor, an airport users' committee, or the state legislature, may play important roles in airport operations or oversight but do not have the formal authority to enforce compliance with federal grant agreements specifically. These responsibilities are vested in the federal government, particularly the FAA, to ensure a standardized approach to aviation safety and operations across all airports receiving federal aid.