We never had it. We only controlled certain small areas and dictated terms to the Mexicans to end the war. We never controlled territory.
If we had tried to take Mexico we’d have had worse problems than Maximillian ever had. They were not about to let the Gringos take over.
Thank God we didn’t try.
Now we are seeing Reconquista and how do you like that?
We had defeated their army, taken their capital, and annexed a third of their territory. I’d call that pretty decisive