that immediately after the signing of the present convention, a copy of it shall be communicated to the government of the United States, that that government shall be invited to accede to it.... But, as the high contracting parties would expose themselves, in making any delay in carrying into effect articles one and two of the present convention, to fail in the end which they wish to attain, they have agreed not to defer, with a view of obtaining the accession of the government of the United States, the commencement of the above-mentioned operations beyond the period at which their combined forces may be united in the vicinity of Vera Cruz.[204]
The advisability of inviting the coöperation of the United States had been the subject of considerable discussion and difference of opinion among the three European governments. England and France had urged the coöperation of the United States, while Spain had opposed it.
In compliance with the fourth article the convention was submitted to the government of the United States by a note dated November 30, 1861, signed jointly by the representatives of Spain, France, and Great Britain at Washington.
Mr. Seward's reply conveying the declination of the United States to the invitation to coöperate with the three allied European powers in the demonstration against Mexico was dated December 4, 1861. After reviewing the substance of the convention, he said:
First. As the undersigned has heretofore had the honor to inform each of the plenipotentiaries now addressed, the President does not feel himself at liberty to question, and he does not question, that the sovereigns represented have undoubted right to decide for themselves the fact whether they have sustained grievances, and to resort to war against Mexico for the redress thereof, and have a right also to levy the war severally or jointly.
In the second place, Mr. Seward expressed the satisfaction of his government that the allied powers had clearly repudiated in the convention all idea of carrying on the war for their own ambitious ends and all intention of exercising in the subsequent affairs of Mexico any influence of a character to impair the right of the Mexican people to choose and freely to constitute the form of their own government.
It is true, as the high contracting parties assume, that the United States have, on their part, claims to urge against Mexico. Upon due consideration, however, the President is of opinion that it would be inexpedient to seek satisfaction of their claims at this time through an act of accession to the convention. Among the reasons for this decision which the undersigned is authorized to assign, are, first, that the United States, so far as it is practicable, prefer to adhere to a traditional policy recommended to them by the father of their country and confirmed by a happy experience, which forbids them from making alliances with foreign nations; second, Mexico being a neighbor of the United States on this continent, and possessing a system of government similar to our own in many of its important features, the United States habitually cherish a decided good-will toward that republic, and a lively interest in its security, prosperity, and welfare. Animated by these sentiments, the United States do not feel inclined to resort to forcible remedies for their claims at the present moment, when the government of Mexico is deeply disturbed by factions within, and exposed to war with foreign nations. And of course, the same sentiments render them still more disinclined to allied war against Mexico, than to war to be waged against her by themselves alone.
In conclusion, Mr. Seward referred to the fact that the United States government had authorized their representative in Mexico to enter into a treaty conceding to the Mexican government material aid, which might, he hoped, enable that government to satisfy the just claims and demands of the allied sovereigns and so to avert the war which they have agreed among each other to levy against Mexico.[205]
As already related, the efforts of the executive in this direction were not approved by the Senate and the negotiations in regard to guaranteeing the interest on the Mexican loan were broken off. The treaty negotiated by Mr. Corwin was in fact never submitted to the Senate, for by the time it was ready the French forces occupied a part of Mexican territory, and it was feared that a loan to Mexico under such conditions would be considered a breach of neutrality.
In pursuance of the London convention, Vera Cruz was occupied in the early part of 1862 by a Spanish force of 6,000 men under command of Marshal Prim; a French force of 2,500, which was largely reinforced soon afterward; and a force of 700 British marines.