Texas and the Road to Annexation

Independence did not make Texas annexation inevitable. It took nine years, a failed treaty, a change of strategy, and a final vote in Congress.

Mexico’s 1823–25 colonization laws invited American settlers into Texas to strengthen a frontier, not to give it away.¹ Within little more than a decade, the settlers those laws brought in had outgrown Mexican governance of the territory. What follows picks up where that story left off — not with the colonization laws themselves, but with the political rupture they eventually produced, and the decade-long, genuinely uncertain path from a declaration of independence to a vote in the United States Congress.

It is tempting to read Texas independence in 1836 and U.S. statehood in 1845 as a single, inevitable story. They were not. Texas spent nearly a decade as a sovereign republic, recognized by the United States, Britain, France, and other powers, actively courted by more than one of them. Annexation was debated and rejected in Washington before it was approved. It was contested inside Texas. And Mexico, which had never recognized Texas independence in the first place, treated the eventual U.S. vote as a provocation, not a formality.

From Colony to Revolution

Grievances Declared, March 2, 1836

On March 2, 1836, fifty-nine delegates meeting at Washington-on-the-Brazos signed the Texas Declaration of Independence, most likely drafted by committee chairman George C. Childress.² The declaration listed the delegates’ own grievances against the Mexican government — it is a political document stating one side’s case, not a neutral chronicle — charging that Mexico had ceased to protect “the lives, liberty, and property of the people,” had transformed from a federal republic into “a consolidated, central, military despotism,” and had failed to provide public education, trial by jury, or religious freedom.² It also accused Mexico of inciting Native American attacks on settlers and waging what it called “a war of extermination” against the Texian population.² Two of the fifty-nine signers, José Antonio Navarro and his uncle José Francisco Ruiz, were native-born Tejanos; Lorenzo de Zavala, a Mexican-born federalist who had broken with President Santa Anna’s government; their signatures are a reminder that the revolution was not a purely Anglo-American movement, even though Anglo-American settlers made up the large majority of the Texian side.⁶

A Republic Built on Contested Ground

The constitution the new republic adopted in 1836 did more than establish a government. It settled, for Texas, at least, several of the questions that would make annexation so contentious a decade later. The constitution explicitly protected slavery and barred “Africans, the descendents of Africans, and Indians” from citizenship, foreclosing any ambiguity about the new republic’s racial and legal order.³ It also guaranteed generous land grants, a league and a labor to heads of families, a third of a league to single men over seventeen. Continuing, in different legal form, the same settlement incentives Mexico’s own colonization laws had offered.³ A bicameral legislature, an American-style presidency, and a four-tiered judiciary completed a political structure that looked, deliberately, far more like the United States than like the Mexican federal system Texas had just left.³

Nine Years an Independent Republic

Houston’s Patient Diplomacy

Sam Houston favored annexation, but he also recognized that Texas’s financial weakness and military vulnerability made diplomatic recognition and foreign trade important to the republic’s survival.⁴ But Houston also recognized what stood in the way: opposition in Britain and France to U.S. expansion, and opposition in the northern United States to admitting another slaveholding state.⁴ Rather than force an issue Washington was not ready to decide, Houston pursued a patient, two-track strategy during his first term and again during his second (1841–44): secure diplomatic recognition and trade relationships with European powers to strengthen the Republic’s position, while continuing to press Washington, and leave annexation itself to develop when the politics allowed it.⁴, ¹

Van Buren, Lamar, and a Question Deferred

Texas voters had approved annexation as early as September 1836, within months of independence.¹ President Martin Van Buren rejected the proposal in 1837. Although the administration cited constitutional concerns and the risk of war with Mexico, antislavery opposition in the North was also a major obstacle to annexation.¹ Houston’s successor, Mirabeau B. Lamar (1838–41), did not pursue annexation at all, preferring an independent, westward-expanding Texas of his own vision. Only with Houston’s return to the presidency in 1841, and a shift in the political climate in Washington, did annexation return to the table in earnest.¹

Tyler’s Treaty and the Senate’s Rejection

The British Alarm

By 1843, American officials had grown genuinely alarmed at the possibility that an independent Texas — courted by British diplomats who opposed U.S. annexation, sought commercial advantages, and supported efforts to end slavery — might remain permanently outside the United States’ orbit.¹ President John Tyler, eager to secure a lasting achievement for his troubled administration, made annexation a priority and negotiated a formal treaty of annexation with the Republic of Texas, signed April 12, 1844.⁵

The Senate Vote of June 8, 1844

The treaty needed a two-thirds vote in the U.S. Senate to be ratified. It did not come close. On June 8, 1844, the Senate rejected the treaty 16 in favor to 35 against, far short of the constitutional threshold.⁷ Senator Thomas Hart Benton of Missouri, who supported westward expansion generally but opposed this treaty specifically, argued that annexing Texas by treaty at that moment would inflame sectional conflict over slavery and risk the Union itself.⁷ The vote made one thing clear: annexation, if it happened, would need a different procedural route, and a different political moment.⁷

A Second Route: Annexation by Joint Resolution

The Terms of the Resolution

The 1844 presidential election supplied the different moment. James K. Polk, an outspoken annexationist, won the presidency running on an expansionist platform, and his victory was read in Washington as a mandate.¹ Rather than attempt a second treaty, which would again require a two-thirds Senate majority, annexation’s supporters pursued a joint resolution of Congress, which needed only a simple majority in each chamber.⁸ The Joint Resolution for Annexing Texas specified that Texas would enter the Union directly as a state rather than as a territory, addressed the disposition of Texas’s public lands and public debt, and included a provision allowing for the future division of Texas into as many as four additional states, should Texas and Congress later agree to it.⁹

The Vote in Congress

The House passed the joint resolution 120–98 on January 25, 1845. The Senate approved an amended version 27–25 on February 27, and the House accepted the Senate’s version 132–76 the following day. President Tyler signed the joint resolution on March 1, 1845, just days before leaving office.⁹

Texas Says Yes

The Texas Congress and Convention Vote

The U.S. resolution was an offer, not a completed act; Texas still had to accept it. Texas President Anson Jones convened the Texas Congress on June 16, 1845, and a separate convention of delegates assembled on July 4, 1845, to consider the American terms.¹, ¹⁰ Mexico’s competing offer of recognition — negotiated with British and French mediation and conditioned on Texas remaining an independent republic — was also before the convention.⁵ Both bodies voted in favor of annexation, choosing the American terms over Mexico’s competing offer. José Antonio Navarro, the same Tejano leader who had signed the 1836 Declaration of Independence, sat as the sole Hispanic delegate to the 1845 convention and helped write the state constitution that followed, a continuity of Tejano political participation across the Republic’s entire independent existence, from its founding declaration to its final act.⁶

Statehood, December 29, 1845

Texas voters approved both the annexation ordinance and the new state constitution in October 1845, after which Congress formally accepted Texas as the twenty-eighth state on December 29.¹, ¹⁰ The formal transfer of authority from the Republic to the new state government came weeks later, on February 19, 1846, when outgoing President Anson Jones declared: “The Republic of Texas is no more.”¹

Mexico’s Response

Mexico had never recognized Texas independence in the first place. After the 1836 Battle of San Jacinto, the Mexican government refused to approve the treaties Antonio López de Santa Anna had signed as a prisoner of war, insisting he had acted under coercion and that Texas therefore remained legally Mexican territory.⁵ U.S. annexation, from Mexico City’s perspective, was not a bilateral American decision but an act of territorial aggression against Mexico itself. Mexico’s minister in Washington, Juan Almonte, protested the annexation and requested his passports. Mexico formally severed diplomatic relations with the United States on March 28, 1845.¹¹, ⁵ That last diplomatic option, the Cuevas–Smith agreement reached that spring, arrived too late to change the outcome: the Texas convention had already chosen annexation over it on July 4, 1845.⁵

An Unresolved Border

Annexation did not resolve Texas’s border; it transferred a disputed claim from the Republic of Texas to the United States. The question of whether the Rio Grande or the Nueces marked Texas’s southern boundary now became a dispute between the United States and Mexico.

The Republic of Texas claimed the Rio Grande as its southern boundary after 1836, while Mexico continued to recognize the Nueces River as the boundary. That disagreement, inherited rather than created by annexation, is where the next chapter of this story begins.

Read more from this era in The Mexican-American War Begins and The Treaty of Guadalupe Hidalgo and America’s New Border.

Footnotes

1. Texas State Historical Association — “Annexation”
2. Texas State Historical Association — “Texas Declaration of Independence”
3. Texas State Historical Association — “Constitution of the Republic of Texas (1836)”
4. Texas State Library and Archives Commission — Sam Houston exhibit
5. Office of the Historian, U.S. Department of State — “The Annexation of Texas, the Mexican-American War, and the Treaty of Guadalupe-Hidalgo, 1845–1848”
6. Texas State Historical Association — “José Antonio Navarro”
7. U.S. Capitol Visitor Center — “Senate Roll Call on the Treaty of Annexation between the United States of America and the Republic of Texas,” June 8, 1844
8. U.S. Capitol Visitor Center — “H.J. Res. 46, A Joint Resolution for Annexing Texas to the United States,” January 27, 1845
9. Texas State Library and Archives Commission — “Joint Resolution for Annexing Texas,” March 1, 1845
10. Texas State Historical Association — Texas Day by Day, “U.S. Congress approves annexation of Texas”
11. American History Central — “Texas Annexation (1845)”