If we allowed visa exempt status for Thai visitors to the United States, there would be no one left here except for us expats and the hi-so Thais and their millionaires. No one left to serve us in restaurants, no nurses in the hospitals, and no party girls in the bars. Service in the U.S. would be much better! 555
- unfortunately by doing that, they would invite endless appeals and occasional legal threats against individual consular officers. The same policy is in effect worldwide- no details provided for denials. Applicants can read between the lines of the term "insufficient evidence:, and being fully aware of their own circumstances, come to their own conclusions.
I am so sorry this happened, but unless she's got quite a lot of previous travel history to countries that require visas (ex: Europe) and a hell of a lot of financial assets here and a damned good job, it's a very long shot. It never hurts to try again, but unless her circumstances have changed, she's probably going to get turned down again. Good luck.
Was it a B1 or a B2 or combined? The refusal rate is as high as 80%, and they never provide further details for "insufficient information", but it's almost always financial- i.e. the applicant has more reason to stay in the U.S. than to return to Thailand, where they have insufficient net worth in property, investments and cash. Did she interview in English or in Thai? Did they ask her for more information about you and the duration of your relationship?