Upvote:2
Both my passport and my US visa were issued in a country in which I am not a resident, and which is not related to my nationality.
It has made no difference to my entries to the US. A visa is a visa.
Upvote:6
If you have a multiple entry B1 (visitor) visa, and I believe they grant those for 10 years now, I don't see why they would refuse you entry (assuming there are no other red flags). A visa is a visa, if it's valid and your passport is valid, it should be no problem.
You say you visited the US before, why is this a problem now ?
The same goes for the airline, they're required to check you're legally allowed to enter your destination country and by way of your visa, you are.
You mention "commercial deliveries", if you have a business visa this may be problematic at the border if your intent is tourism. It's a little arbitrary at this point, I've seen a friend granted entry for tourism while on a business visa. But I'd say it's more risky than a regular tourist visa