The friendship between Valdez and Lopez remained warm, and Valdez appointed Lopez President of the Military Commission, Governor of Trinidad, and Commander-in-chief of the Central Department of the Island. Now rumors that a revolution was imminent began to be generally circulated. No one could tell the source from which they sprang, but they seemed to be in the atmosphere, and were the constant subject of whispered conversations in the cafés and restaurants and in the houses of the liberals.
When Valdez relinquished the Captain-Generalship, and O'Donnell began his infamous rule, Lopez felt himself released from all obligations to the government. Every particle of Spanish sympathy had long since been purged from his heart, and his honors from such a source had become irksome. He had refrained from actively plotting against Spain while Valdez was ruling over Cuba, his friendship for Valdez making him unwilling to embarrass him. This curb removed, Lopez gladly relinquished his offices and retired to his own estates. He was not nearly so successful as a business man as he was as a soldier, and the business enterprises which he undertook proved to be failures. But he took over the management of some copper mines and these were used as bases for the organization of the attempt to free Cuba which was now beginning to take form and shape in his mind. He mingled with the people quietly and endeavored, successfully, to win their esteem and liking. The district in which the mines were located was settled mainly by men who were always in the saddle. Now Lopez was a fine horseman. There were no deeds of horsemanship which they might perform which he could not duplicate or improve upon. He thus soon won a popular following, and this curiously enough without attracting the particular attention of the Captain-General or his spies, and became a hero to the men among whom he dwelt. They were all indebted to him for deeds of kindness, for no man in difficulties ever appealed to Lopez's purse in vain. Thus he acquired an influence which made him confident that should he speak the word the countryside would rally with him under the banner of revolt against Spain.
Now Lopez was not particularly interested in the emancipation of the slaves. He thought that they were necessary for the successful cultivation of the island, and he could not successfully visualize a free black population. He felt that a Cuba unbound by any ties to any other nation meant free blacks. He therefore favored annexation to the United States. He took the American Consul at Havana, Robert Campbell, into his confidence, and asked his advice. Campbell was in favor of annexation by the United States and expressed his opinion that the majority of the American people, especially those in the southern states, were heartily in favor of the United States taking over Cuba; but he also called Lopez's attention to the numerous treaty obligations binding the United States and Spain together, and assured him that whatever secret support he might hope to gain from that country, he (Campbell) certainly would not officially come out and sanction any movement to free Cuba from Spain. He felt that if Lopez by revolution could perform the operation and sever the bonds which bound Cuba to Spain, the United States might reasonably be expected not to refuse the gift of the island were it offered to her.