Indeed, the objections to complying with the request of the House contained in the resolution before me are much stronger than those which existed in the case of the resolution in 1796. This resolution calls for the "instructions and orders" to the minister of the United States to Mexico which relate to negotiations which have not been terminated, and which may be resumed. The information called for respects negotiations which the United States offered to open with Mexico immediately preceding the commencement of the existing war. The instructions given to the minister of the United States relate to the differences between the two countries out of which the war grew and the terms of adjustment which we were prepared to offer to Mexico in our anxiety to prevent the war. These differences still remain unsettled, and to comply with the call of the House would be to make public through that channel, and to communicate to Mexico, now a public enemy engaged in war, information which could not fail to produce serious embarrassment in any future negotiation between the two countries. I have heretofore communicated to Congress all the correspondence of the minister of the United States to Mexico which in the existing state of our relations with that Republic can, in my judgment, be at this time communicated without serious injury to the public interest. Entertaining this conviction, and with a sincere desire to furnish any information which may be in possession of the executive department, and which either House of Congress may at any time request, I regard it to be my constitutional right and my solemn duty under the circumstances of this case to decline a compliance with the request of the House contained in their resolution. JAMES K. POLK. WASHINGTON, _January 21, 1848_. _To the Senate of the United States_: I herewith communicate to the Senate, for its consideration, a declaration of the Government of the Grand Duchy of Mecklenburg-Schwerin, bearing date at the city of Schwerin on the 9th December, 1847, acceding substantially to the stipulations of our treaty of commerce and navigation with Hanover of the 10th June, 1846. Under the twelfth article of this treaty-- The United States agree to extend all the advantages and privileges contained in the stipulations of the present treaty to one or more of the other States of the Germanic Confederation which may wish to accede to them, by means of an official exchange of declarations, provided that such State or States shall confer similar favors upon the said United States to those conferred by the Kingdom of Hanover, and observe and be subject to the same conditions, stipulations, and obligations.