Polk sent an envoy to have secret talks with Santa Anna. The U.S. Consul in Havana, R.B. Campbell, began seeking a way to engage with Santa Anna. A U.S. citizen of Spanish birth, Col. Alejandro José Atocha, knew Santa Anna and acted initially as an intermediary. Polk noted his contacts with Atocha in his diary, who said that Santa Anna was interested in concluding a treaty with the U.S. gaining territory while Mexico received payment that would include settling its debts. Polk decided that Atocha was untrustworthy and sent his own representative, Alexander Slidell Mackenzie, (a relative of John Slidell) to meet with Santa Anna. Mackenzie told Santa Anna that Polk wished to see him in power and that if they came to an agreement that the U.S. naval blockade would be lifted briefly to allow Santa Anna to return to Mexico. Polk requested $2 million from Congress to be used to negotiate a treaty with Mexico or payment to Mexico before a treaty was signed. 