This legislation, titled the Subterranean Border Defense Act , establishes a requirement for annual reports concerning counter illicit cross-border tunnel operations. It specifically amends a provision within the James M. Inhofe National Defense Authorization Act for Fiscal Year 2023. The amendment ensures that after the initial development of a strategic plan, subsequent reports on these operations will be submitted annually . This measure aims to provide continuous oversight and updated information on efforts to detect, deter, and dismantle illicit tunnels used for cross-border activities.