The United States Senate Committee on Homeland Security and Governmental Affairs is the chief oversight committee of the United States Senate. It has jurisdiction over matters related to the Department of Homeland Security and other homeland security concerns, as well as the functioning of the government itself, including the National Archives, budget and accounting measures other than appropriations, the Census, the federal civil service, the affairs of the District of Columbia and the United States Postal Service.
https://en.wikipedia.org/wiki/United_States_Senate_Committee_on_Homeland_Security_and_Governmental_Affairs