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.