_To the Senate of the United States_: In compliance with the resolution of the Senate of the 21st of March, 1860, requesting the President of the United States "to inform the Senate, if in his opinion it be not incompatible with the public interest, if any instructions have been given to any of the officers of the Navy of the United States by which, in any event, the naval force of the United States or any part thereof were to take part in the civil war now existing in Mexico, and if the recent capture of two war steamers of Mexico by the naval force of the United States was done in pursuance of orders issued by this Government, and also by what authority those steamers have been taken in possession by the naval force of the United States and the men on board made prisoners," I transmit the inclosed report, with accompanying papers, from the Secretary of the Navy. JAMES BUCHANAN. WASHINGTON, _March 29, 1860_. _To the House of Representatives_: I transmit herewith a report of the Secretary of War, with its accompaniments, communicating the information called for by the resolution of the House of Representatives of the 1st instant, concerning the difficulties on the southwestern frontier. JAMES BUCHANAN. WASHINGTON, _March 30, 1860_. _To the House of Representatives_: In answer to the resolution of the 26th instant, requesting information touching the imprisonment of an American citizen in the island of Cuba, I transmit a report from the Secretary of State and the documents by which it was accompanied. JAMES BUCHANAN. WASHINGTON, _April 2, 1860_. _To the Senate of the United States_: In compliance with the resolution of the Senate of the 28th of February last, relative to the uniform or costume of persons in the diplomatic or consular service, I transmit a report from the Secretary of State and the papers by which it was accompanied. JAMES BUCHANAN. WASHINGTON CITY, _April 3, 1860_. _To the Senate of the United States_: I herewith transmit to the Senate a report of the Attorney-General, in answer to a resolution of the Senate of the 21st of March, "that the President be respectfully requested to communicate to the Senate the correspondence between the judges of Utah and the Attorney-General or the President with reference to the legal proceedings and condition of affairs in the Territory of Utah." JAMES BUCHANAN. WASHINGTON, _April 5, 1860_. _To the Senate of the United States_: I transmit, for the consideration of the Senate with a view to ratification, a treaty of friendship, commerce, and navigation between the United States and the Republic of Honduras, signed by the plenipotentiaries of the parties in this city on the 28th day of last month.