To authorize voluntary withholding of Maryland, Virginia, and District of Columbia income taxes in the case of Members of Congress and congressional employees.

Directs the Speaker of the House of Representatives to enter into agreements with the State of Maryland, the State of Virginia, and the Commissioner of the District of Columbia, at the request for any such agreement from the proper official, which shall provide that in the case of any Member of Congress or any congressional employee who is subject to Virginia, Maryland, or the District of Columbia income tax and who voluntarily agrees to the withholding from his pay with respect to such tax, the appropriate disbursing officer shall comply with the State or District of Columbia withholding statute.