Assuming your husband now has his Thai ID card and house registration you can do the following:
- get an extension of stay married to a Thai husband for a year at a time. No money in the bank needed if the husband is Thai.
As others have mentioned you’ll need to have your US marriage certificate properly legalised and translated. The US embassy may be the place to do this, but if not, you’ll need to do the multi step legalisation process starting back in the states as others have described.
You can’t get married twice here. If you try the local marriage registry will want to see a certificate of no impediment from back in your home country to say you aren’t already married.
- assuming he has a Thai ID card, there is no urgency any more for him to leave the country to ‘swap out’ passport. He can simply present his Thai ID card and US passport next time he leaves to avoid overstay (see link below).
Compared with where? What other country in the world lets you stick 800,000 baht in the bank (400,000 if married to a this citizen) and essentially let you stay forever?
If you’ve got a Thai husband you should apply for citizenship which is fairly straightforward for foreign women to get . Means you won’t have to worry about visas.
Sounds like he has a Thai parent and getting extensions based in that? Then if so he can enter on a 30 day visa exemption and then get a years stay. This article explains it.