Another minister from the Republic of Nicaragua has now presented himself, and has been received as such, satisfactory evidence appearing that he represents the Government _de facto_ and, so far as such exists, the Government _de jure_ of that Republic. That reception, while in accordance with the established policy of the United States, was likewise called for by the most imperative special exigencies, which require that this Government shall enter at once into diplomatic relations with that of Nicaragua. In the first place, a difference has occurred between the Government of President Rivas and the Nicaragua Transit Company, which involves the necessity of inquiry into rights of citizens of the United States, who allege that they have been aggrieved by the acts of the former and claim protection and redress at the hands of their Government. In the second place, the interoceanic communication by the way of Nicaragua is effectually interrupted, and the persons and property of unoffending private citizens of the United States in that country require the attention of their Government. Neither of these objects can receive due consideration without resumption of diplomatic intercourse with the Government of Nicaragua. Further than this, the documents communicated show that while the interoceanic transit by the way of Nicaragua is cut off, disturbances at Panama have occurred to obstruct, temporarily at least, that by the way of New Granada, involving the sacrifice of the lives and property of citizens of the United States. A special commissioner has been dispatched to Panama to investigate the facts of this occurrence with a view particularly to the redress of parties aggrieved. But measures of another class will be demanded for the future security of interoceanic communication by this as by the other routes of the Isthmus. It would be difficult to suggest a single object of interest, external or internal, more important to the United States than the maintenance of the communication, by land and sea, between the Atlantic and Pacific States and Territories of the Union It is a material element of the national integrity and sovereignty. I have adopted such precautionary measures and have taken such action for the purpose of affording security to the several transit routes of Central America and to the persons and property of citizens of the United States connected with or using the same as are within my constitutional power and as existing circumstances have seemed to demand. Should these measures prove inadequate to the object, that fact will be communicated to Congress with such recommendations as the exigency of the case may indicate. FRANKLIN PIERCE. EXECUTIVE OFFICE, _Washington, May 16, 1856_. _To the Senate and House of Representatives_: