[196] In the United States, a heated political debate emerged regarding how much of Mexico the United States should seek to annex, Whigs such as Henry Clay arguing that the United States should only seek to settle the Texas border question, and some expansionists arguing for the annexation of all of Mexico.[197] War opponents were also active; Whig Congressman Abraham Lincoln of Illinois introduced the "exact spot" resolutions, calling on Polk to state exactly where American blood had been shed on American soil to start the war, but the House refused to consider them.[198]

Peace: the Treaty of Guadalupe Hidalgo[edit]
The Mexican Cession (in red) was acquired through the Treaty of Guadalupe Hidalgo. The Gadsden Purchase (in orange) was acquired through purchase after Polk left office.
Frustrated by a lack of progress in negotiations, Polk ordered Trist to return to Washington, but the diplomat, when the notice of recall arrived in mid-November 1847, ignored the order, deciding to remain and writing a lengthy letter to Polk the following month to justify his decision. Polk considered having Butler, designated as Scott's replacement, forcibly remove him from Mexico City.