Yes, as I said, slavery was not threatened.
It was not economically viable in places like New Mexico or Arizona anyway so there was no real appetite to spread slavery there once votes in the Senate were no longer needed.
“When Southern people tell us that they are no more responsible for the origin of slavery than we are, I acknowledge the fact. When it is said the institution exists, and it is very difficult to get rid of in any satisfactory way, I can understand and appreciate the saying. I surely will not blame them for not doing what I should not know what to do as to the existing institution.........
A system of gradual emancipation might well be adopted, and I will not undertake to judge our Southern friends for tardiness in this matter. I acknowledge the constitutional rights of the States — not grudgingly, but fairly and fully, and I will give them any legislation for reclaiming their fugitive slaves.” Abraham Lincoln
And as I said, not where it currently existed.
It was not economically viable in places like New Mexico or Arizona anyway so there was no real appetite to spread slavery there once votes in the Senate were no longer needed.
Not all slaves worked the fields.
“When Southern people tell us that they are no more responsible for the origin of slavery than we are, I acknowledge the fact. When it is said the institution exists, and it is very difficult to get rid of in any satisfactory way, I can understand and appreciate the saying. I surely will not blame them for not doing what I should not know what to do as to the existing institution.........
"But all this, to my judgment, furnishes no more excuse for permitting slavery to go into our own free territory, than it would for reviving the African slave-trade by law. The law which forbids the bringing of slaves from Africa, and that which has so long forbid the taking of them to Nebraska, can hardly be distinguished on any moral principle; and the repeal of the former could find quite as plausible excuses as that of the latter."