Anthropologist Lewis Henry Morgan of New York wrote Calhoun in 1848 that “The feeling toward [the Negro] in the North is decidedly that of hostility. There is no respect for them. No wish for their elevation; but on the contrary a strong desire to prevent the multiplication of the race as far as it is possible to do so . . .” Former New York Governor (and later Union Major-General] John Adams Dix spoke of the “inferior caste” in free States: “Public opinion at the North – call it prejudice if you will – presents an insuperable barrier against its elevation in the social scale . . . A class thus degraded . . . will not multiply . . .” Pennsylvania Congressman David Wilmot in mid-1846 introduced a bill to ban African slavery from land acquired from Mexico.
Bernhard Thuersam, www.Circa1865.com The Great American Political Divide
Northern Hostility Toward the Negro
“Closely interwoven with the Northern fear of [Southern political] dominance was fear of the Negro himself, and the [Wilmot] Proviso, commonly called the “White Man’s Resolution” by the free-soilers, seems to have expressed a Northern desire to keep the territories free not only of slaves, but of the black race.
The rhetoric of the free-soil movement is replete with expressions of hostility toward the Negro. One of the most notable instances occurs in James Russell Lowell’s allegorical treatment of the territorial issue in his enormously popular “Bigelow Papers.”
In this poem Lowell represents the Negroes as “long-legged swine” who ruin the territories, making them uninhabitable for the northern farmer. Anti-Negro expressions also found their way into free-soil platforms, albeit in muted form. The Barnburners Utica [New York] Convention called for preserving the western land “for the Caucasian race,” or in the more popular parlance of Thomas Hart Benton “keeping the territory clean of Negroes.” One free-soiler assured the House of Representatives that he had little concern for “the degraded and degenerate blacks.”
Northern hostility toward the Negro is likewise revealed in the vehement response to a proposal by Governor William Smith of Virginia to export the State’s freedmen to the North. In his speech representing the great dangers involved in rejecting the Wilmot Proviso, [New York Congressman] George Rathbun referred incidentally to Governor Smith’s proposal.
“What do we say [to it]?” asked Rathbun. He gave the answer: “That there is no territory in the free States belonging to them [the Negroes]; that there is no place for them. As far as New York is concerned, should the refuse part of the population of Virginia reach our territory, we will carry them back to Virginia.”
Smith’s proposal caused such consternation in Ohio that the Democratic minority in the State legislature was almost able to force through a law prohibiting Negro immigration altogether. One Democratic congressman from Ohio . . . appealing to the fear and hatred of the Negro in the North, used Smith’s proposal as a justification for bowing to the will of the South on the Proviso question.
In the North, where the Negro population was relatively small, the means of assuring white supremacy was to exclude the Negro, and when he could not be physically excluded, he was excluded from civic life.
The key to the strong emotional commitment in the North to free soil was the overwhelming fear of the extension of an alien race, as well as of an alien institution, to the point where it would directly affect the Northern people. The Wilmot Proviso had such a strong appeal precisely because it expressed the Northern determination to prevent the spread not only of slavery but of the despised Negro as well.”
(Democratic Politics and Sectionalism, the Wilmot Proviso Controversy, Chaplain W. Morrison, UNC Press, 1967, excerpts pp. 70-73)