After successfully negotiating his treaty, Lord Ashburton came to New York, and the two men met once more.

There remained the question of the North-Western boundary to fester into a sore. This did not fail to happen, and in 1846 the two nations again stood on the verge of war. On this subject, too, Mr. Gallatin published a pamphlet which took a characteristic view of the dispute.[171] He did not hesitate to concede that the American title to the contested territory was defective; that neither nation could show an indisputable right in the premises; but that America had all the chances in her favor, and that, in any possible event, war was the least effective policy; “the certain consequence, independent of all the direct calamities and miseries of war, will be a mutual increase of debt and taxation, and the ultimate fate of Oregon will be the same as if the war had not taken place.” This thoroughly common-sense view was so obvious that neither government could long resist it. The Oregon question, too, was in the end peaceably settled.

There was, however, one political difficulty of far deeper consequence than currency or boundary, and offering a problem to which no such simple reasoning applied; this was the growth of slavery and the slave power. Here two great principles clashed. The practical rule of politics which had guided Mr. Gallatin through life, to avoid all issues which might endanger the Union, was here more directly applicable than elsewhere, for Mr. Gallatin knew better than most men the dangers involved in this issue. He had found even the liberal mind of Mr. Jefferson impervious to argument on the consequences of extending the slave power. Not only was he no sympathizer with slavery; he was in principle an abolitionist; he never changed that opinion, which he had incorporated so early as 1793 in a draft of an act, declaring that “slavery was inconsistent with every principle of humanity, justice, and right.” In 1843, when Maria Chapman urged him to write for her anti-slavery Annual, he declined. “I would not for any consideration say anything that might injure the holy cause in which you are engaged, and yet I must tell the truth, or what appears to me to be the truth.” Determined to respect the constitutional compact, he carefully abstained from taking any part in the slavery agitation. Nevertheless the time came when he could no longer be silent. On the 24th April, 1844, a popular meeting was held in New York to protest against the annexation of Texas; Mr. Gallatin was asked to preside, and one of the most courageous acts of his life was to take the chair and address this great and turbulent assembly:

SPEECH ON THE ANNEXATION OF TEXAS.

At my advanced age and period of life, withdrawn as I am from the politics of the day, desirous of quiet, nothing could have induced me to attend this meeting but the magnitude of the subject I will simply indicate the points involved in the question which has called us together, leaving to others abler than myself to discuss them at length. Till this day the United States have preserved the highest reputation amongst the nations of the earth for the fidelity with which they have fulfilled all their engagements and generally carried on all their relations with foreign nations. They have never engaged in a war for the sake of conquest, never but in self-defence and for the purpose of repelling aggression against their most sacred rights. They have never acquired any territory by conquest or violence, nor in any other way but by fair treaties, fairly negotiated, with the consent of all the parties that might have any claim to the territory in question. What now is the nature of the question which has been proclaimed lately,—the annexation of Texas? By the most solemn treaties between us and foreign nations Texas has been adjudged as being within the limits of Mexico. If there was any claim on the part of the United States to that country, it was expressly renounced by these treaties. It is perfectly clear then that the attempt now made is a direct and positive violation of treaty stipulations. I have heard it stated that there was danger that it would also lead us into war. I think this but a very partial and erroneous view of the subject. I do assert, without fear of contradiction, that the annexation of Texas under existing circumstances is a positive declaration of war against Mexico. I will say that even if the independence of Texas had been acknowledged by Mexico, it would be still war, for Texas is at war with Mexico, and in such a state of things to annex it to this country is to make us a party to that war. But in existing circumstances and while Texas continues at war with Mexico and her independence is not acknowledged by the latter power, I will say that, according to the universally acknowledged laws of nations and universal usage of all Christian nations, to annex Texas is war; and in that assertion I will be sustained by every publicist and jurist in the Christian world. This war would be a war founded on injustice, and a war of conquest I will not stop to inquire what Mexico may do or ought to do in such circumstances. It is enough that the war would be unjust. I know nothing of the ability or desire of Mexico to injure us. It is enough to say that an unjust war, founded upon the violation of solemn treaty stipulations, would disgrace the national character, which till this day has been unsullied.

There is another view of this subject, more complex, more delicate, but I do think it is both better and fairer to meet it in the face. I allude to the effect that this measure would have on the question of slavery. The Constitution of the United States was from the beginning founded upon mutual concessions and compromise. When that Constitution was passed it appears that the Southern States, alarmed by the difference of their social state and institutions from ours in the North, required some guarantees. They may have been granted with reluctance, but they are consecrated by the Constitution. The surrender of fugitive slaves and the non-equal principle of representation have been granted, and, however repugnant to our feelings or principles, we must carry out the provisions into effect faithfully and inviolate. But it ought to be observed that these provisions applied only to the territory then within the limits of the United States, and to none other. In the course of events we acquired Louisiana and Florida, and, without making any observations on these precedents, it so happened that, in the course of events, three new States have been added out of territories not, when the Constitution was adopted, within the limits of the United States; and more, eventually Florida was added to the slave-holding States. Thus it has happened that additional security and additional guarantee have been given to the South. With those I think they ought to be satisfied. Nothing is more true than that if we wish to preserve the Union, it must be by mutual respect to the feelings of others, but these concessions must be altogether mutual and not all on one side. If it be asked what we do require from the South, I will answer,—nothing whatever. We do not require from the South any new measure that should be repugnant either to their opinions or feelings. Nor do we interfere with the question of slavery in Texas. We have taken no measures, we do not mean to take any measures, either to prevent or induce them to admit slavery. It is a free, independent State, and we wish them to do precisely what they please. All we ask is to preserve the present state of things. All we ask is that no such plan as shall again agitate that question shall be attempted to be carried into effect. It is too much to ask from us that we should take an active part in permitting the accession of a foreign state, and a foreign slave-holding state, to the Union; and that we should consent that new States should again be added to those upon an equal basis of representation. This is all we ask. The discussion of these questions does not originate with us. It originates with those who have fostered this plan. We wish every discussion of this question to be avoided. But if it be forced upon us we will be forced to meet it.

There are other considerations and most momentous questions which depend upon this. In the first place, does the treaty-making power imply a power to annul existing treaties? Does that power embrace the right of declaring war? Can the President or Senate, in making a treaty with another power, disregard the stipulations of a treaty with a third party? Again, can a foreign state be admitted in the Union without the unanimous consent of all the parties to the compact? I know that the precedents of Louisiana and Florida may be adduced; but let us see how far they go. Their validity depends solely on the fact that there was universal acquiescence. Not one State in the Union protested against the proceeding, and if upon this occasion the same should occur, I will say that without adverting to forms we might consider it proper to admit that there is a right. But the precedent goes no farther. It does not go to the point that the power does or does not exist.

These, I have said, are momentous questions, such as would necessarily shake the Union to its very centre, and such as I wish to see forever avoided. Another point. This measure will bring indelible disgrace upon our democratic institutions; it will bring them into discredit; it will excite the hopes of their enemies; it will check the hopes of the friends of mankind. We had hoped that, when the people of the United States had resumed their rights and the government was in their hands, there would be a gradual amelioration of legislation, of the social state, of the intercourse between men. All this is checked by a measure on which treaties are violated and an unjust war undertaken.

Still, I do not despair. My confidence is in the people. But we must give them time to make, to form, and to express their opinions; and therefore it is that I do strongly reprobate the secret, the insidious manner in which that plot has been conducted, so as to debar the people of the Union from the right of expressing an opinion on the subject.

Gentlemen, I have done. I thank you for the indulgence with which you have been pleased to listen to me. I am highly gratified that the last public act of a long life should have been that of bearing testimony against this outrageous attempt. It is indeed a consolation that my almost extinguished voice has been on this occasion raised in defence of liberty, of justice, and of our country.