
Amidst the Mexican-American War, a conspiracy emerged involving President James Polk and the exiled leader of Mexico, Santa Anna. Not only would this conspiracy embolden Whigs but Democrats would also come down on President Polk for his actions.

Amidst the Mexican-American War, a conspiracy emerged involving President James Polk and the exiled leader of Mexico, Santa Anna. Not only would this conspiracy embolden Whigs but Democrats would also come down on President Polk for his actions.

Upon America’s declaring war with Mexico in May 1846, President James Polk sent “the Army of the West” to New Mexico. See Daniel Walker Howe, What Hath God Wrought: Transformation of America, 1815-1848, 758. This army was sent for the sole purpose of conquest, and it was led by Brigadier General Stephen Watts Kearny. Id.

Leading up to President James Polk’s May 13, 1846 announcement of the Mexican-American War, tension arose between President Polk and the Secretary of State, James Buchanan.

On the evening of April 24, 1846, Captain Seth Thornton and 68 American dragoons “went to confirm intelligence that a Mexican military force had crossed the Rio Grande” just miles away from where Brigadier General Zachary Taylor was camped. Daniel Walker Howe, What Hath God Wrought: Transformation of America, 1815-1848, 731.

Following the Democrats’ victory in the Election of 1844, President James Polk began negotiating with the British about the Oregon territory, which America had permitted Britain to occupy for several decades. See Daniel Walker Howe, What Hath God Wrought: Transformation of America, 1815-1848, 715.

President John Tyler sought to achieve much success in foreign affairs during his presidency, and part of that success, he imagined, would be accomplished through expansion of the country. See Daniel Walker Howe, What Hath God Wrought: Transformation of America, 1815-1848, 677. The annexation of the Republic of Texas to be the 28th state in the Union was to be his goal.

In 1821, Mexico achieved its independence from Spain, changing the nature of America-Mexico relations. See Daniel Walker Howe, What Hath God Wrought: Transformation of America, 1815-1848, 658-59.

In Martin Van Buren’s inaugural address, in March of 1837, he boasted of the prosperity and expansion of commerce that had occurred under his predecessor, Andrew Jackson. Just months later, the Panic of 1837 would begin. Daniel Walker Howe, What Hath God Wrought: Transformation of America, 1815-1848, 502.

By 1815, the Native Americans had been pushed mostly out of the New England area and into territories just east of the Mississippi River and the entirety of the territory west of the Mississippi River. The Native Americans were a significant obstacle to expanding American territory.