It is beyond question the destiny of our race to spread themselves over the continent of North America, and this at no distant day should events be permitted to take their natural course. The tide of emigrants will flow to the south, and nothing can eventually arrest its progress. If permitted to go there peacefully, Central America will soon contain an American population which will confer blessings and benefits as well upon the natives as their respective Governments. Liberty under the restraint of law will preserve domestic peace, whilst the different transit routes across the Isthmus, in which we are so deeply interested, will have assured protection. Nothing has retarded this happy condition of affairs so much as the unlawful expeditions which have been fitted out in the United States to make war upon the Central American States. Had one-half the number of American citizens who have miserably perished in the first disastrous expedition of General Walker settled in Nicaragua as peaceful emigrants, the object which we all desire would ere this have been in a great degree accomplished. These expeditions have caused the people of the Central American States to regard us with dread and suspicion. It is our true policy to remove this apprehension and to convince them that we intend to do them good, and not evil. We desire, as the leading power on this continent, to open and, if need be, to protect every transit route across the Isthmus, not only for our own benefit, but that of the world, and thus open a free access to Central America, and through it to our Pacific possessions. This policy was commenced under favorable auspices when the expedition under the command of General Walker escaped from our territories and proceeded to Punta Arenas. Should another expedition of a similar character again evade the vigilance of our officers and proceed to Nicaragua, this would be fatal, at least for a season, to the peaceful settlement of these countries and to the policy of American progress. The truth is that no Administration can successfully conduct the foreign affairs of the country in Central America or anywhere else if it is to be interfered with at every step by lawless military expeditions "set on foot" in the United States. JAMES BUCHANAN WASHINGTON, _January 11, 1858_. _To the Senate and House of Representatives of the United States_: I have received from Samuel Medary, governor of the Territory of Minnesota, a copy of the constitution of Minnesota, "together with an abstract of the votes polled for and against said constitution" at the election held in that Territory on the second Tuesday of October last, certified by the governor in due form, which I now lay before Congress in the manner prescribed by that instrument. Having received but a single copy of the constitution, I transmit this to the Senate. JAMES BUCHANAN WASHINGTON, _January 11, 1858_. _To the House of Representatives_: