George Bush actually said...
I delegated to the Secretary of the Treasury, after consultation with the Secretary of State, the authority to take such actions, including the promulgation of rules and regulations, and to employ all powers granted to the President by the IEEPA and the United Nations Participation Act, as may be necessary to carry out the purposes of the order.
Context
Letter to Congressional Leaders Reporting on Blocking Property of Certain Persons Contributing to the Conflict in the Democratic Republic of the Congo
10/26/2006