Whereas by an act of Congress of the United States of the 24th of May, 1828, entitled "An act in addition to an act entitled 'An act concerning discriminating duties of tonnage and impost,' and to equalize the duties on Prussian vessels and their cargoes," it is provided that upon satisfactory evidence being given to the President of the United States by the government of any foreign nation that no discriminating duties of tonnage or impost are imposed or levied in the ports of the said nation upon vessels wholly belonging to citizens of the United States, or upon the produce, manufactures, or merchandise imported in the same from the United States or from any foreign country, the President is thereby authorized to issue his proclamation declaring that the foreign discriminating duties of tonnage and impost within the United States are and shall be suspended and discontinued so far as respects the vessels of the said foreign nation and the produce, manufactures, or merchandise imported into the United States in the same from the said foreign nation or from any other foreign country, the said suspension to take effect from the time of such notification being given to the President of the United States and to continue so long as the reciprocal exemption of vessels belonging to citizens of the United States and their cargoes, as aforesaid, shall be continued, and no longer; and Whereas satisfactory evidence has lately been received from the Government of His Holiness the Pope, through an official communication addressed by Cardinal Antonelli, his secretary of state, to the minister resident of the United States at Rome, under date of the 7th day of December, 1857, that no discriminating duties of tonnage or impost are imposed or levied in the ports of the Pontifical States upon vessels wholly belonging to citizens of the United States, or upon the produce, manufactures, or merchandise imported in the same from the United States or from any foreign country: Now, therefore, I, James Buchanan, President of the United States of America, do hereby declare and proclaim that the foreign discriminating duties of tonnage and impost within the United States are and shall be suspended and discontinued so far as respects the vessels of the subjects of His Holiness the Pope and the produce, manufactures, or merchandise imported into the United States in the same from the Pontifical States or from any other foreign country, the said suspension to take effect from the 7th day of December, 1857, above mentioned, and to continue so long as the reciprocal exemption of vessels belonging to citizens of the United States and their cargoes, as aforesaid, shall be continued, and no longer. [SEAL.] Given under my hand, at the city of Washington, the 25th day of February, A.D. 1858, and of the Independence of the United States the eighty-second. JAMES BUCHANAN. By the President: LEWIS CASS, _Secretary of State_.