Lincoln's view on invasion

This is from an article in the Seattle Post-Intelligencer entitled "Fear is Driving this Political Drama":

Abraham Lincoln vigorously denounced President Polk for unnecessarily, in Lincoln's view, launching the war with Mexico in 1846. Lincoln declared Polk's argument -- "that if it shall become necessary to repel invasion, the President may, without violation of the Constitution ... invade the territory of another country" -- permitted the chief executive "to make war at pleasure" and subject the American people to "the most oppressive of all Kingly oppressions."

-- Hubert G. Locke

As George Santayana said, "Those who do not remember the past are condemned to repeat it."