Do you have documentation on that? What was that all about?
I'm not going to get too deep into it tonight, but it is a matter of history. The 14th was passed during reconstruction after the Civil War. The Southern states were told that Union troops would continue occupying them unless they voted for the 13,14,and 15th amendments.
They basically twisted their arm and forced them to ratify it to get their rights restored. If I recall correctly, they would not be readmitted to the Union unless their legislatures voted to approve those amendments, and therefore they would have no representation in congress, and would simply be required to continue doing whatever the occupation forces told them to do.
Anyway, it's late, and I'm going to bed. I may look up some more details of it tomorrow, but It is quite evident that without that deliberate arm twisting, they would not have achieved a sufficient number of states to ratify that amendment.