The Select Committee on Ethics administers and enforces the Senate's Code of Official Conduct, investigating allegations of improper conduct by members, officers, or employees. It issues advisory opinions, provides ethics training, and oversees financial disclosure requirements and regulations on gifts and franking privileges.

The Committee on Finance holds broad jurisdiction over taxation and revenue measures, the nation's debt, customs, international trade, and key social programs. It oversees Social Security, Medicare, Medicaid, and unemployment benefits, shaping fiscal policy and health legislation.

The Committee on Homeland Security and Governmental Affairs provides oversight of homeland security operations and the efficiency and management of the federal government. Its jurisdiction includes counterterrorism, cybersecurity, border security, emergency management, and governmental affairs, including the Postal Service and the Census Bureau.

The Select Committee on Intelligence provides vigilant legislative oversight of the United States Intelligence Community, ensuring activities conform to the Constitution and laws. It reviews intelligence budgets, programs, and operations, and prepares legislation authorizing appropriations for intelligence agencies.