Millard Fillmore actually said...
The delays which have taken place in the negotiation of this treaty have been principally caused by the want of a resident diplomatic agent of the United States at Berne, and are among the reasons for which an appropriation for a charge' d'affaires to that Government has recently, by my direction, been recommended in a letter from the Department of State to the chairman of the Committee on Foreign Relations of the Senate.
02/02/1853