From 1965 through 1970, the South experienced a net migration loss -- the number of people who moved into the region compared to the number of people who moved out -- of more than 287, 000 African-Americans.

CNN: Family roots lure many African-Americans back to South

This migration likely caused a significant loss of revenue for debate organizers.

FORBES: Connect

"We think the continued discussions between our two countries on migration matters are important to prevent the needless loss of life at sea and important for ensuring the safe and legal orderly migration that's called for under the accords, " he said.

CNN: graphic