I can't decide if you want to take AM (Aeromexico) AAA-LAX or if you want to take AM (before noon) AAA-LAX.
People might be willing to help you if you weren't so secretive.
If it's AM (before noon), then the answer is maybe: more information needed, cannot answer with the details provided. If it's AM (Aeromexico) then the answer is no, you cannot SDC or SDS on an international flight