"No political issue in 2020 approaches slavery in the mid-19th century in terms of potential divisiveness."

That is a complete failure to understand the cause if divisiveness. The cause is always those who choose criminal acts instead of non-criminal acts. They have names, they wear pants, they are responsible for the divisiveness, and failure to account for that fact accountable to them leads to divisiveness.

Cause:
Those who perpetrate crimes that lead to divisiveness

Failure:
Those who fail to accurately account for the cause, and then reasonably fail to defend against the cause.

What, for example, does the following words mean:

In the Writings of Thomas Jefferson, Vol. I. p. 10
"The clause, too, reprobating the enslaving the inhabitants of Africa, was struck out in complaisance to South Carolina and Georgia, who had never attempted to restrain the importation of slaves, and who, on the contrary, still wished to continue it. Our northern brethren also, I believe felt a little tender under those censures; for, though their people had very few slaves themselves, yet they had been pretty considerable carriers of them to others."

Most people today have no clue as to what the above means. Context may help people today who may want to know what those words mean in the context of this current Article in Politics, Law & Policy Forum at IDW community Web Page.

"northern bethren," "South Carolina," and "Georgia" were special, and they (those people not named) had a Special Interest. They, not named by name, had the Special Interest known collectively as African Slavery.

Who in the world wants to perpetrate human trafficking? What might happen if human trafficking goes undefended, for failure to provide sanctuary to runaway slaves running away from the criminals who enslave them?

Where is the law? What happened to the law?

On the 20th day of October 1774
"This agreement contained a clause to discontinue the slave trade, and a provision not to import East India tea from any part of the world. In the article respecting non-exportations, the sending of rice to Europe was excepted."

On the 1st of April, 1775
"On this occasion, the importation of slaves was expressly prohibited."

What can be expected to happen if the victims are not defended in an expeditious manner: justice delayed is justice denied?

No one knew?

Notes on the State of Virginia
by Thomas Jefferson, 1781
"To emancipate all slaves born after passing the act. The bill reported by the revisors does not itself contain this proposition; but an amendment containing it was prepared, to be offered to the legislature whenever the bill should be taken up, and further directing, that they should continue with their parents to a certain age, then be brought up, at the public expence, to tillage, arts or sciences, according to their geniusses, till the females should be eighteen, and the males twenty-one years of age, when they should be colonized to such place as the circumstances of the time should render most proper, sending them out with arms, implements of houshold and of the handicraft arts, feeds, pairs of the useful domestic animals, &c. to declare them a free and independant people, and extend to them our alliance and protection, till they shall have acquired strength; and to send vessels at the same time to other parts of the world for an equal number of white inhabitants; to induce whom to migrate hither, proper encouragements were to be proposed. It will probably be asked, Why not retain and incorporate the blacks into the state, and thus save the expence of supplying, by importation of white settlers, the vacancies they will leave? Deep rooted prejudices entertained by the whites; ten thousand recollections, by the blacks, of the injuries they have sustained; new provocations; the real distinctions which nature has made; and many other circumstances, will divide us into parties, and produce convulsions which will probably never end but in the extermination of the one or the other race."

June 17, 1788
George Mason:
"Mr. Chairman, this is a fatal section, which has created more dangers than any other. The first clause allows the importation of slaves for twenty years. Under the royal government, this evil was looked upon as a great oppression, and many attempts were made to prevent it; but the interest of the African merchants prevented its prohibition. No sooner did the revolution take place, than it was thought of. It was one of the great causes of our separation from Great Britain. Its exclusion has been a principal object of this state, and most of the states in the Union. The augmentation of slaves weakens the states; and such a trade is diabolical in itself, and disgraceful to mankind; yet, by this Constitution, it is continued for twenty years. As much as I value a union of all the states, I would not admit the Southern States into the Union unless they agree to the discontinuance of this disgraceful trade, because it would bring weakness, and not strength, to the Union."

How about a prediction? If We The People let the criminals take-over the government, we will become slaves soon enough.

Thomas Jefferson, A Summary View of the Rights of British America, August 1745
"For the most trifling reasons, and sometimes for no conceivable reason at all, his majesty has rejected laws of the most salutary tendency. The abolition of domestic slavery is the great object of desire in those colonies, where it was unhappily introduced in their infant state. But previous to the enfranchisement of the slaves we have, it is necessary to exclude all further importations from Africa; yet our repeated attempts to effect this by prohibitions, and by imposing duties which might amount to a prohibition, have been hitherto defeated by his majesty’s negative: Thus preferring the immediate advantages of a few African corsairs to the lasting interests of the American states, and to the rights of human nature, deeply wounded by this infamous practice. Nay, the single interposition of an interested individual against a law was scarcely ever known to fail of success, though in the opposite scale were placed the interests of a whole country. That this is so shameful an abuse of a power trusted with his majesty for other purposes, as if not reformed, would call for some legal restrictions. . . "

Garrison's Constitution
The Covenant with Death and How It Was Made
By Paul Finkelman, 2000
"The abolitionist William Lloyd Garrison thought the U.S. Constitution was the result of a terrible bargain between freedom and slavery. Calling the Constitution a "covenant with death" and "an agreement with Hell," he refused to participate in American electoral politics because to do so meant supporting "the pro-slavery, war sanctioning Constitution of the United States." Instead, under the slogan "No Union with Slaveholders," the Garrisonians repeatedly argued for a dissolution of the Union.
"Part of Garrison's opposition to continuing the Union stemmed from a desire to avoid the corruption that came from participating in a government created by the proslavery Constitution. But this position was also at least theoretically pragmatic. The Garrisonians were convinced that the legal protection of slavery in the Constitution made political activity futile, while support for the Constitution merely strengthened the stranglehold slavery had on America. In 1845 Wendell Phillips pointed out that in the years since the adoption of the Constitution, Americans had witnessed "the slaves trebling in numbers—slaveholders monopolizing the offices and dictating the policy of the Government-prostituting the strength and influence of the Nation to the support of slavery here and elsewhere—trampling on the rights of the free States, and making the courts of the country their tools." Phillips argued that this experience proved "that it is impossible for free and slave States to unite on any terms, without all becoming partners in the guilt and responsible for the sin of slavery."

I don't know, maybe the Dog made me do it, you know, my Dog SAM.

New Constitution Creates A National Government; Will Not Abate Foreign Influence; Dangers Of Civil War And Despotism
March 7, 1788.
"There are but two modes by which men are connected in society, the one which operates on individuals, this always has been, and ought still to be called, national government; the other which binds States and governments together (not corporations, for there is no considerable nation on earth, despotic, monarchical, or republican, that does not contain many subordinate corporations with various constitutions) this last has heretofore been denominated a league or confederacy. The term federalists is therefore improperly applied to themselves, by the friends and supporters of the proposed constitution. This abuse of language does not help the cause; every degree of imposition serves only to irritate, but can never convince. They are national men, and their opponents, or at least a great majority of them, are federal, in the only true and strict sense of the word.

"Whether any form of national government is preferable for the Americans, to a league or confederacy, is a previous question we must first make up our minds upon. . . .

"That a national government will add to the dignity and increase the splendor of the United States abroad, can admit of no doubt: it is essentially requisite for both. That it will render government, and officers of government, more dignified at home is equally certain. That these objects are more suited to the manners, if not [the] genius and disposition of our people is, I fear, also true. That it is requisite in order to keep us at peace among ourselves, is doubtful. That it is necessary, to prevent foreigners from dividing us, or interfering in our government, I deny positively; and, after all, I have strong doubts whether all its advantages are not more specious than solid. We are vain, like other nations. We wish to make a noise in the world; and feel hurt that Europeans are not so attentive to America in peace, as they were to America in war. We are also, no doubt, desirous of cutting a figure in history. Should we not reflect, that quiet is happiness? That content and pomp are incompatible? I have either read or heard this truth, which the Americans should never forget: That the silence of historians is the surest record of the happiness of a people. The Swiss have been four hundred years the envy of mankind, and there is yet scarcely an history of their nation. What is history, but a disgusting and painful detail of the butcheries of conquerors, and the woeful calamities of the conquered? Many of us are proud, and are frequently disappointed that office confers neither respect nor difference. No man of merit can ever be disgraced by office. A rogue in office may be feared in some governments - he will be respected in none. After all, what we call respect and difference only arise from contrast of situation, as most of our ideas come by comparison and relation. Where the people are free there can be no great contrast or distinction among honest citizens in or out of office. In proportion as the people lose their freedom, every gradation of distinction, between the Governors and governed obtains, until the former become masters, and the latter become slaves. In all governments virtue will command reverence. The divine Cato knew every Roman citizen by name, and never assumed any preeminence; yet Cato found, and his memory will find, respect and reverence in the bosoms of mankind, until this world returns into that nothing, from whence Omnipotence called it.

"That the people are not at present disposed for, and are actually incapable of, governments of simplicity and equal rights, I can no longer doubt. But whose fault is it? We make them bad, by bad governments, and then abuse and despise them for being so. Our people are capable of being made anything that human nature was or is capable of, if we would only have a little patience and give them good and wholesome institutions; but I see none such and very little prospect of such. Alas! I see nothing in my fellow-citizens, that will permit my still fostering the delusion, that they are now capable of sustaining the weight of SELF-GOVERNMENT: a burden to which Greek and Roman shoulders proved unequal. The honor of supporting the dignity of the human character, seems reserved to the hardy Helvetians alone.

"If the body of the people will not govern themselves, and govern themselves well too, the consequence is unavoidable - a FEW will, and must govern them. Then it is that government becomes truly a government by force only, where men relinquish part of their natural rights to secure the rest, instead of an union of will and force, to protect all their natural rights, which ought to be the foundation of every rightful social compact.

"Whether national government will be productive of internal peace, is too uncertain to admit of decided opinion. I only hazard a conjecture when I say, that our state disputes, in a confederacy, would be disputes of levity and passion, which would subside before injury. The people being free, government having no right to them, but they to government, they would separate and divide as interest or inclination prompted - as they do at this day, and always have done, in Switzerland. In a national government, unless cautiously and fortunately administered, the disputes will be the deep-rooted differences of interest, where part of the empire must be injured by the operation of general law; and then should the sword of government be once drawn (which Heaven avert) I fear it will not be sheathed, until we have waded through that series of desolation, which France, Spain, and the other great kingdoms of the world have suffered, in order to bring so many separate States into uniformity, of government and law; in which event the legislative power can only be entrusted to one man (as it is with them) who can have no local attachments, partial interests, or private views to gratify.

"That a national government will prevent the influence or danger of foreign intrigue, or secure us from invasion, is in my judgment directly the reverse of the truth. The only foreign, or at least evil foreign influence, must be obtained through corruption. Where the government is lodged in the body of the people, as in Switzerland, they can never be corrupted; for no prince, or people, can have resources enough to corrupt the majority of a nation; and if they could, the play is not worth the candle. The facility of corruption is increased in proportion as power tends by representation or delegation, to a concentration in the hands of a few. . . .

"As to any nation attacking a number of confederated independent republics . . . it is not to be expected, more especially as the wealth of the empire is there universally diffused, and will not be collected into any one overgrown, luxurious and effeminate capital to become a lure to the enterprizing ambitious.

"That extensive empire is a misfortune to be deprecated, will not now be disputed. The balance of power has long engaged the attention of all the European world, in order to avoid the horrid evils of a general government. The same government pervading a vast extent of territory, terrifies the minds of individuals into meanness and submission. All human authority, however organized, must have confined limits, or insolence and oppression will prove the offspring of its grandeur, and the difficulty or rather impossibility of escape prevents resistance. Gibbon relates that some Roman Knights who had offended government in Rome were taken up in Asia, in a very few days after. It was the extensive territory of the Roman republic that produced a Sylla, a Marius, a Caligula, a Nero, and an Elagabalus. In small independent States contiguous to each other, the people run away and leave despotism to reek its vengeance on itself; and thus it is that moderation becomes with them, the law of self-preservation. These and such reasons founded on the eternal and immutable nature of things have long caused and will continue to cause much difference of sentiment throughout our wide extensive territories. From our divided and dispersed situation, and from the natural moderation of the American character, it has hitherto proved a warfare of argument and reason.
A FARMER

Alexander: "Hey, George, we have a problem."
George: "What is it Al?"
Alexander: "When the slaves run away, they find sanctuary in sanctuary states."
George: "Let's conscript an army, invade that state, and force slavery upon those disobedient slaves."
Alexander: "Ah, George, you retired, remember."