In the correspondence with the Government of the Netherlands upon this subject they have contended that the favor shown to their own shipping by this bounty upon their tonnage is not to be considered a discriminating duty; but it can not be denied that it produces all the same effects.  Had the mutual abolition been stipulated by treaty, such a bounty upon the national vessels could scarcely have been granted consistent with good faith.  Yet as the act of Congress of January 7th, 1824 has not expressly authorized the Executive authority to determine what shall be considered as a revival of discriminating duties by a foreign government to the disadvantage of the United States, and as the retaliatory measure on our part, however just and necessary, may tend rather to that conflict of legislation which we deprecate than to that concert to which we invite all commercial nations, as most conducive to their interest and our own, I have thought it more consistent with the spirit of our institutions to refer to the subject again to the paramount authority of the Legislature to decide what measure the emergency may require than abruptly by proclamation to carry into effect the minatory provisions of the act of 1824.

During the last session of Congress treaties of amity, navigation, and commerce were negotiated and signed at this place with the Government of Denmark, in Europe, and with the Federation of Central America, in this hemisphere.  These treaties then received the constitutional sanction of the Senate, by the advice and consent to their ratification.  They were accordingly ratified on the part of the United States, and during the recess of Congress have been also ratified by the other respective contracting parties.  The ratifications have been exchanged, and they have been published by proclamations, copies of which are herewith communicated to Congress.

These treaties have established between the contracting parties the principles of equality and reciprocity in their broadest and most liberal extent, each party admitting the vessels of the other into its ports, laden with cargoes the produce or manufacture of any quarter of the globe, upon the payment of the same duties of tonnage and impost that are chargeable upon their own.  They have further stipulated that the parties shall hereafter grant no favor of navigation or commerce to any other nation which shall not upon the same terms be granted to each other, and that neither party will impose upon articles of merchandise the produce or manufacture of the other any other or higher duties than upon the like articles being the produce or manufacture of any other country.  To these principles there is in the convention with Denmark an exception with regard to the colonies of that Kingdom in the arctic seas, but none with regard to her colonies in the West Indies.

In the course of the last summer the term to which our last commercial treaty with Sweden was limited has expired.  A continuation of it is in the contemplation of the Swedish Government, and is believed to be desirable on the part of the United States.  It has been proposed by the King of Sweden that pending the negotiation of renewal the expired treaty should be mutually considered as still in force, a measure which will require the sanction of Congress to be carried into effect on our part, and which I therefore recommend to your consideration.