In 1839, Moore was accused of recruiting officers and up to 80 sailors from the
Boston to join him in enlisting with the
Republic of Texas Navy. Moore's cousin, Alexander Moore, confirmed this rumor to Commodore
Charles Ridgley, who forwarded the charges to the
Secretary of the Navy. On July 8, 1839, Moore resigned from the U.S. Navy to become commander of the Republic of Texas Navy. U.S. Secretary of the Navy,
John Forsyth, tried to bring charges against Moore based on his violation of the Neutrality Act of 1819, but Moore resigned his commission before any trial was held. From 1840–1841, he sailed off the Mexican coast to hasten peace negotiations between the Republic of Texas and
Mexico. On collapse of the negotiations, Moore returned to Texas and to the support of Texas President
Mirabeau B. Lamar. Lamar signed a treaty with the Mexican state of
Yucatán for the lease the Texas navy for $8,000 per month and to protect their ports from being
blockaded by the Mexican Navy. On September 18, 1840, Moore received orders to guard the Yucatán coast in conformity with the
Texas-Yucatán Treaty and on December 13, 1840, left
Galveston, Texas, with three ships to join the small Yucatán fleet at
Sisal, Yucatán, under the command of former Texas Navy officer Captain James D. Boylan. Moore later captured the town of
San Juan Bautista,
Tabasco, and then surveyed the Texas coast. His chart was later published by the
British Admiralty.
Invasion of Tabasco In September 1840, Moore invaded the Mexican state of Tabasco in support to the Tabasco federalist forces, collaborating in the overthrow of the centralist governor José Ignacio Gutierrez, capturing the state capital San Juan Bautista on November 17, 1840. Subsequently, and due to a disagreement with the new federalist government, for the lack of a payment of $25,000 Mexican pesos promised to Moore, on December 14, 1840, he bombarded the capital again, until he reached a new agreement with the government of Tabasco for the payment of the debt. ==President Sam Houston==