Bumpersticker: "Who would Jesus bomb?" Good question.
"Allow a President to invade a neighboring nation, whenever he shall deem it necessary to repel an invasion, and you allow him to do so, whenever he may choose to say he deems it necessary for such a purpose-and you allow him to make war at pleasure. If, today, he should choose to say he thinks it necessary to invade Canada, to prevent the British from invading us, how could you stop him." (Abraham Lincoln in a letter to W. H. Herndon, Feb. 15, 1848)