Can anyone do FBA in Mexico as a United States seller?

Yes, you can simply use NAUA/Remote Fulfillment to list your product in the Mexico marketplace, though with lower competition it may happen that the product demand is lower as well, so make sure about that as well.

Yes, you can do FBA in Mexico as a USA seller by remote fulfillment. But make sure demand of the product in Mexico marketplace before jumping into it.

If you want to sell your United States Products in Mexico, then you can simply enroll your products in remote fulfillment, using remote fulfillment you can either fulfill your orders in Mexico with USA inventory or you can directly send your stock to Mexico.

Yes, you can enroll in Remote fulfillment which is allowing you to sell your inventory in Mexico and Canada.

You can sell in Mexico as a US seller by enrolling in the remote fulfillment program. This will allow you to sell the same US inventory in Mexico or send inventory to the Mexico warehouse.

Yes, if you have enrolled in the remote flfillment program then you can sell in Mexico as a US seller. through remote fulfillment program you can send your inventory in Mexico or you can sell the US inventory in Mexico as well at the same time.