I have been featuring Letters From an American historian, and my and sometimes other of her readers' comments. Her Facebook page shows 1.4 million followers.
Heather Cox Richardson
an American historian and professor of history at Boston College, where she teaches courses on the American Civil War, the Reconstruction Era, the American West, and the Plains Indians. She previously taught history at MIT and the University of Massachusetts Amherst. Wikipedia
Here is the lead for Heather's July 9 letter about how the 14th Amendment came to be. Below it and my comment is the full letter.
On July 9, 1868, Americans changed the U.S. Constitution for the fourteenth time, adapting our foundational document to construct a new nation without systematic Black enslavement. In 1865, the Thirteenth Amendment to the Constitution had prohibited slavery on the basis of race, but it did not prevent the establishment of a system in which Black Americans continued to be unequal. Backed by President Andrew Johnson, who had taken over the presidency after an actor had murdered President Abraham Lincoln, white southern Democrats had done their best to push their Black neighbors back into subservience. So long as southern states had abolished enslavement, repudiated Confederate debts, and nullified the ordinances of secession, Johnson was happy to readmit them to full standing in the Union, still led by the very men who had organized the Confederacy and made war on the United States.