What was Daniel Webster‘s position on slavery

"Webster viewed slavery as a matter of historical reality rather than moral principle."

Explanation:

"He argued that the issue of its existence in the territories had been settled long ago when Congress prohibited slavery in the Northwest Ordinance of 1787 and divided regions into slave and free in the 1820 Missouri Compromise. He believed that slavery where it existed could not be eradicated but also that it could not take root in the newly acquired agriculturally barren lands of the southwest. Attacking radical abolitionists to boost his credibility with moderate southerners, Webster urged northerners to respect slavery in the South and to assist in the return of fugitive slaves to their owners. He joined Clay in warning that the Union could never be dismembered peacefully."

https://www.senate.gov/artandhistory/history/common/generic/Speeches_Webster_7March.htm