Yes, we would consider living in Vietnam with the child for a couple of years because we'd like to spend some time bonding with Vietnamese family, anyway. Also, this process would seem to avoid the $35K+ in costs associated with intercountry adoption. Instead, we would just have the (quite low) cost of domestically adopting in Vietnam (which my wife is eligible to do as a Vietnamese citizen), plus the costs of seeking permanent residency for the child. Although I do understand that this entire plan is complex and would require further investigation. (E.g. my wife would need to be a US citizen to the leave the US for so long without losing status, and I would need a visa to be in Vietnam.)