The attempt of Louis Napoleon to establish a European monarchy in Mexico under the tutelage of France was the most serious menace that republican institutions in the new world have had to face since the schemes of the Holy Alliance were checked by Monroe and Canning. The thwarting of that attempt may be accounted one of the greatest triumphs of American diplomacy. The internal disorders common to South and Central American republics have always been a fruitful source of embarrassment to the United States, on account of the liability to European intervention to which these governments continually subject themselves in such periods by their open and flagrant disregard of international obligations. Of no country is this statement truer than of Mexico, where the well-nigh interminable strife of parties gave rise between the years 1821 and 1857 to thirty-six different governments. In 1857 a favorable change occurred in the affairs of the republic. A constituent congress, elected by the people of the different states, framed and adopted a republican constitution which promised better things for the future. Under the provisions of this constitution an election was held in July (1857) and General Comonfort chosen president almost without opposition. His term of office was to begin December 1, 1857, and to continue four years. Within one brief month, however, President Comonfort was driven from the capital, and ultimately from the country, by an uprising headed by General Zuloaga. As soon as Comonfort abandoned the presidency, General Benito Juarez, the president of the Supreme Court of Justice, became according to the constitution, the president de jure of the republic for the remainder of the unexpired term, that is, until December 1, 1861. General Zuloaga had, however, assumed the name of president, with indefinite powers, and the entire diplomatic corps, including the minister of the United States, had recognized his government. But Zuloaga was speedily expelled, and the supreme power seized by General Miramon, the head of the church party, whom the diplomatic corps likewise recognized. Meanwhile Juarez, the constitutional president, had proceeded to Vera Cruz, where he put his administration into successful operation.

For several months, Mr. John Forsyth, the American minister, continued at the city of Mexico in the discharge of his duties. In June, 1858, however, he suspended his diplomatic connection with the Miramon government. Our relations, which had been bad under former governments, were now rendered almost intolerable under that of Miramon by outrages towards American citizens and personal indignities to Mr. Forsyth himself. His action was approved by President Buchanan, and he was directed to return to the United States. All diplomatic intercourse was thus terminated with the government of Miramon, but as yet none was established with the Juarez government. The ultimate success of the latter became, however, so probable that the following year the President sent a confidential agent to Mexico to inquire into and report upon the actual condition of the belligerents, and in consequence of his report, Mr. Robert M. McLane was dispatched to Mexico, March 8, 1859, "with discretionary authority to recognize the government of President Juarez, if on his arrival in Mexico he should find it entitled to such recognition according to the established practice of the United States." On the 7th of April, Mr. McLane presented his credentials to President Juarez, having no hesitation, he said, "in pronouncing the government of Juarez to be the only existing government of the republic." He was cordially received by the authorities at Vera Cruz, and during all the vicissitudes of the next eight years the United States government continued to extend its sympathy and moral support to the government of Juarez as the only one entitled to the allegiance of the people of Mexico.

Juarez thus came forward, in the rôle of reformer, as the champion of constitutionalism and the supremacy of the state against the overreaching power, influence, and wealth of the church party. He was a full-blooded Indian, without the slightest admixture of Spanish blood. In December, 1860, he finally succeeded in overthrowing the party of Miramon and driving the latter into exile. Immediately, on reoccupying the city of Mexico, the Constitutionalists proceeded to execute with severity the decree issued at Vera Cruz nationalizing or sequestrating the property of the church.

The most difficult question which the new government had to face was that of international obligations recklessly contracted by the various revolutionary leaders who had successively been recognized as constituting the government of Mexico. In consequence of debts contracted and outrages and enormities perpetrated, for the most part during the régime of Miramon and the church party, the governments of England, France, and Spain determined to intervene in Mexico.

The grievances of the British government were based on the following facts: non-settlement of claims of British bondholders; the murder of the British vice-consul at Tasco; the breaking into the British legation and the carrying off £152,000 in bonds belonging to British subjects, besides numerous other outrages committed on the persons and property of individuals.[193]

The claims of the British bondholders referred to had been recognized by the Pakenham convention of October 15, 1842, and formed into a consolidated fund of $250,000, which was to be paid off, principal and interest, by a percentage on import duties at the custom-houses of Vera Cruz and Tampico. This convention was not carried out by the Mexican government, and on December 4, 1851, Mr. Doyle signed on behalf of Great Britain a new convention, in which not only the claims under the Pakenham convention, but others, recognized by both governments, were likewise formed into a consolidated fund, on which the Mexican government bound itself to pay five per cent. as a sinking fund and three per cent. as interest until the debt should be paid off. This five and three per cent. were to be met by a percentage of customs receipts. In 1857 the sinking fund was to be raised to six per cent. and the interest to four per cent.

Two days after the signing of this Doyle convention the Spanish minister in Mexico also signed a convention on behalf of some Philippine missionaries, known as the "Padre Moran" convention, on almost the same basis as the British. The consolidated fund in this case was $983,000, the sinking fund five per cent., and the interest three per cent.

The interest was paid on both funds in almost the whole amount, but the sinking fund was not kept up. Succeeding agreements were made in 1858, in 1859, and in 1860, by which the custom-house assignments to satisfy both conventions (British and Spanish) were raised from twelve per cent. in 1851, to twenty-nine per cent. in 1860.[194]

It will thus be seen that the British and Spanish claims were perfectly legitimate. The French claims, however, were of a somewhat different character. During Miramon's administration arrangements were made through the agency of Jecker, a Swiss banker, by which $750,000 were to be raised through an issue of $15,000,000 of bonds. These bonds fell into the hands of Jecker's French creditors and were pressed by the French government, which thus demanded the repayment of twenty times the original sum advanced. A claim was made also for $12,000,000 for torts on French subjects.[195]

When the Liberal party came into power again in 1860, they were unable to meet the situation and showed a disposition to question the obligatory force of engagements entered into by their various revolutionary predecessors. The British government had undertaken to provide against this contingency upon the occasion of extending recognition to the Juarez administration. Under date of March 30, 1861, Lord John Russell wrote to Sir Charles Wyke, recently appointed minister to Mexico, as follows: