There were many complaints about how Stephen Kearny conducted himself after the Spaniards were finally driven out of California ....
Pretty amazing guy if you can claim him as family ?
No, my “handle” is from my hometown in NJ, named for General Philip Kearny (a Union general killed at the Battle of Chantilly, Virginia) in the Civil War.
FWIW, Mexico was paid for those territories; they might not have wanted to sell, but they did - they weren’t seized outright.