@Rich ***

I didn't say it happens all the time. But they have the right to ask and deny entry.

You can do what many tourists do. Walk from branch to branch. You might get lucky. For some reason it's actually easier in larger malls.

Brandon Thurkettle That's not entirely correct. It depends on bank and location. But there are branches that actually rejects US citizens because of the money laundering paranoia in the US and FATCA. They hate the paperwork.

@Rich ***

It's the same when arriving by air.

@Rachel ******

There are not 100's of approved insurance companies in Thailand if we're talking about the O-A Visa.

@Bob *********

If we're talking about the O-A visa,then you're wrong. Read my comments and see for yourself.

@David ******

It doesn't officially has to be only from a Thai insurance company. But it's very difficult to get the foreign insurance certificate stamped and signed.

This is the certificate:

You can get a Thai health insurance that will work outside Thailand, but those are normally a bit more expensive. If going for an insurance bought in the US for the O-A Longstay Visa,then it will be more problematic.You'll need a signed and stamped certificate specially designed for health insurances bought abroad for the O-A Visa,which most insurance companies refuses to sign.