How did Lincoln's view on the Mexican War affect his later political career?

Answer 1

More than a decade before his Gettysburg Address, back in 1848, when Lincoln was only a Congressman, he was heartbroken and humiliated by our war on Mexico, which had never attacked us. James Polk was the person Representative Lincoln had in mind when he said what he said. Abraham Lincoln said of Polk, his president, his armed forces' commander-in-chief: "Trusting to escape scrutiny, by fixing the public gaze upon the exceeding brightness of military glory -- that attractive rainbow, that rises in showers of blood -- that serpent's eye, that charms to destroy -- he plunged into war."

-- Kurt Vonnegut, A Man Without a Country, pg. 76