2023 Polk Part I
Polk, Mexico, and War Part I
1. 1844 Campaign and Territorial Expansion
Chief issue of the campaign was territorial expansion.
Clay’s strategy: tried to appease both Northern and Southern voters regarding Texas annexation.
James K. Polk emerged victorious, a strong advocate of Manifest Destiny and westward expansion.
2. Polk's Agenda Post-Inauguration (March 1845)
Implemented a four-part agenda in collaboration with Democrats in Congress.
A. Walker Tariff (1846)
Reduced tariff rates from 32% to 25%; one of the lowest in U.S. history.
Aimed to increase trade, particularly with Britain; proved successful according to Treasury Secretary Robert J. Walker.
B. Banking Policy
Restored Martin Van Buren’s “divorce” scheme for banking, previously reversed by the Whigs.
C. Oregon Country Border Dispute
Resolved border tensions with Britain over Oregon Country, which had significant consequences.
Expansionist calls: "54-40' or Fight!" aimed for US control of Oregon up to the 54th parallel.
Britain advocated for the 42nd parallel as their boundary.
Compromise reached: territory divided at the 49th parallel, extending the existing US-Canada border.
3. Slavery and Territorial Expansion Concerns
Anti-slavery sentiment among Northerners questioned the U.S. approach to territorial annexation.
"Conscience” Whigs criticized the addition of slaveholding territories in Texas, questioning why Oregon territory wasn't fully claimed.
4. California Acquisition
Polk’s primary target after Oregon was California due to:
Its agricultural potential.
Strategic importance of San Francisco Bay for trade with Asia.
Dispatched John Slidell to Mexico City in Nov 1845 for negotiations to:
Establish Rio Grande as Texas' southern border.
Settle Texas claim issues with Mexico.
Propose purchasing New Mexico ($5 million) and California (up to $25 million).
5. Breakdown of Negotiations
Mexico rejected Slidell's proposals due to unresolved grievances over Texas loss.
Polk resolved to seize the desired land by military force.
Provocation strategy: Send U.S. troops into disputed territory to elicit an attack from Mexico.
6. Outbreak of the Mexican-American War
Contrasting claims:
U.S. claimed Rio Grande as Texas' southern boundary.
Mexico asserted the Nueces River as the valid southern boundary.
Military engagement began; when U.S. soldiers were killed, Polk labeled it as an attack.
Congress approved a declaration of war on May 13, 1846.
7. Northern Opposition to the War
‘Conscience’ Whigs, led by figures like Abraham Lincoln, demanded clarity on the actual provocation of the conflict.
Concern arose that additional lands gained could extend slavery's reach.
8. Wilmot Proviso
Introduced by Rep. David Wilmot, proposing to ban slavery expansion into any territory added through the war.
Passed in the House but failed in the Senate, highlighting sectional tensions.
9. California's Independence Movement
As conflict ensued, settlers in California, led by Captain John C. Fremont, declared independence from Mexico, leading to the temporary Bear Flag Republic.
10. U.S. Military Success
The Mexican-American War was largely dominated by American forces, led by generals Winfield Scott and Zachary Taylor.
The Treaty of Guadalupe Hidalgo (1848) resulted in:
Mexico accepting the Rio Grande as Texas' border.
U.S. payment of $15 million and settlement of claims (approx. $450 million today).
Cession of the Mexican territories to the U.S. known as the Mexican Cession.
11. Implications of the Mexican Cession
Viewed as:
Great for the U.S. - Expansion and economic opportunity.
Terrible for the U.S. - Heightened tensions over slavery and the moral implications surrounding new territories.