"Have not results in Mexico taught the invincibility of American arms?...The North Americans will spread out far beyond their present bounds. They will encroach again and again upon their neighbors. New territories will be planted, declare their independence, and be annexed. We have New Mexico and California! We will have Old Mexico and Cuba! The isthmus cannot arrest--nor even the Saint Lawrence!! Time has all of this in her womb. A hundred states will grow up where now exists but thirty."

- DeBow's Commercial Review, 1848

Which of the following groups would be least likely to agree with the tone of and sentiments described within the passage?