*It's FB, that's why. Can't help you with visa situation, sorry. We've been getting OA visas for the last 6 yrs. but ours expires next month, and we'll not get another OA.
My wife has a Vietnamese passport, and a US Greencard. She's been in the US since 2006. Starting in 2016, we started staying in Thailand or Vietnam for extended periods, mostly right at 6 months, but once almost 11 months. Didn't travel 2020 until 2022 because of covid. Spent about 9 months/year, in 2 trips each year in Thailand. Last entry to US, in Minneapolis, we were told by immigration officer she had been out of country mostly for the last 2 years, and they could revoke her green card. This would have to be documented and us warned. So they did. Both officers were very rude. We have all things suggested that one needs to prove you have no intention of living out of the country - but neither officer was interested in seeing or listening to that. I pointed out that one reason we were out for extended periods was medical treatment, and the difference in cost, that I have records, and have brought meds back with me. He was only interested that I didn't bring 'over the legal' limit back. Was a disgusting experience - especially when you consider what is happening at the US southern border. Our first entry at that airport, and only one plane arriving, they had pulled at least a dozen people in for further "investigation". Oddly enough, leaving the country from Detroit, there were customs agents in the jetway questioning and searching people to see if they were carrying excess cash out of the country. They seemed to be only questioning Asians, or mixed Asian couples. They were about as rude too. Those were the 1st times such had happened in over 20 years of travel.
Understand. Exactly what we did. In Vietnam, we always get my wife's sister to change our money at the market, get a better rate there (and she's a local so doesn't get scammed like Viet Kieu sometimes do)