If I am not mistaken, the agreement that ended new slaves being brought in was part of the attempt to stave off the coming war. When did that begin?
At any rate, because of the Bloodiest war in American history,the south was ruined, the powerful benefitted. It was lunacy on the scale of what we have today.
The agreement that ended new slaves being brought in was embedded in the Constitution, with such a law prohibited for 20 years. It was passed, with both northern and southern support, as soon as the Constitution permitted, in 1807.
BTW, many southerners had financial interest in such a law, as prohibiting new imports tended to increase the value of slave already here. Northerly slave states, particularly VA, benefitted greatly.
1808. The Constitution banned Congress from interfering with the importation of slaves up till 1808, after which they promptly banned it.
At any rate, because of the Bloodiest war in American history,the south was ruined, the powerful benefitted. It was lunacy on the scale of what we have today.
Same forces, just different arguments. Today we still have the elite and monied Liberal interests dictating what morality the rest of the Nation will have forced upon us.
Now our new morality is "Gay Marriage", and in the future they will teach that the Constitution has Always protected "Gay Marriage" and "Transgenders".
Future Union supporters (brainwashed useful idiots) will argue about how immoral it was to deny equality to homosexuals who wanted to get married.