Can my Thai girlfriend visit the U.S. while on a UK tourist visa?

The user is inquiring whether their Thai girlfriend, who will be visiting the UK on a 6-month tourist visa, can accompany them on a family holiday to the United States. The comments suggest that she will need to secure a US tourist visa independently, as holding a UK visa does not affect the visa requirements for the USA. Multiple comments highlighted the challenges associated with obtaining a US visa for Thai passport holders, including the necessity to apply from Thailand and the lengthy approval process. Overall, the consensus is that while she can travel to other countries that may not require a visa for Thai nationals, visiting the US will require additional steps.