There was no profit in it in New Mexico territory (which means Arizona and part of Nevada too.)
There was no profit in it in any of the territories, except perhaps a tiny bit of Kansas.
...except perhaps a tiny bit of Kansas...
A wee bit of Kansas is it?
The democrat slavers had been fighting for control of Kansas for ten years before they started their insurrection. That would probably explain why you have avoided mentioning Bloody Kansas up til now.
Oh, and I had already mentioned the obvious - the Texas government had allowed and encouraged slavery.
But carry on, carry on with your cotton-brained fantasies. Leave the real world to the adults.