Watch Kamala's husband.
John Tyler = Texas
William H. Seward = Alaska
Although most U.S. politicians supported the Mexican-American War, among the outspoken opponents was Abraham Lincoln, a young congressman from the state of Illinois, who had been elected several months after the declaration of war. Lincoln, like many others who spoke out against the war, considered it a ploy to expand slavery should the U.S. government acquire new territories as a result of a Mexican defeat.
https://library.brown.edu/create/modernlatinamerica/chapters/chapter-14-the-united-states-and-latin-america/primary-documents-w-accompanying-discussion-questions/abraham-lincoln-on-the-mexican-american-war-1846-48/