Now there's a little story to that. Chief Justice Taney, in the Dred Scott decision—which said that the Missouri Compromise restriction of slavery in… - Harry V. Jaffa

And Lincoln said that by your own argument, if the local regulations are not forthcoming, you must support the federal enforcement; if you don’t, you’re taking the same position as the abolitionists, who denied any obligation to enforce the Fugitive Slave Law.

Slavery came to the English colonies in North America in the 17th century because the colonists found themselves in possession of a vast continent, needing only cultivation to make it the homes of millions of free, prosperous, God-fearing human beings. Those who came from Europe would be refugees from the tyranny and oppression of feudalism, divine right monarchy, and religious intolerance. But converting this vast wilderness into cultivated lands required labor. It was nearly inevitable that someone would turn to tribal Africa for some, at least, of this labor. It is paradoxical but true that a large measure of the labor that turned America into a sanctuary for freedom came from slavery. The slave trade that developed between North America and the west coast of Africa is one of the great horror stories of western civilization. It resulted also from the unlimited greed of the African chiefs who enslaved their brother Africans, and then sold them to white slave traders. They in turn sold them, for vast profits, into the new world.

Unless we as a political community can by reasoned discourse re-establish in our own minds the authority of the constitutionalism of the Founding Fathers and of Lincoln, of government devoted to securing the God-given equal rights of every individual human being, we will remain ill equipped to bring the fruits of freedom to others.