He argued that in occupying new Territories Southern men could not compete with emigrant-aid societies at the North.

These could send a voter to the Territories for the sum of $200, while it would cost a Southern man $1500.

Secure political power by emigration, and permit the Territorial Legislatures to decide the slavery question, and the South would be excluded as effectually as by the Wilmot proviso.

Cuba must be acquired, and the flag of this great country must float over Mexico and the Central American States.

But if you apply this doctrine of popular sovereignty, and establish a cordon of free-States from the Pacific to the Atlantic, where in the future are the South to emigrate?
They asked the equal right to emigrate with their property, and protection from Congress during the Territorial condition.