If the USA were to do UBI it would probably only do it for natural born citizens. Otherwise the USA would be crushed by the weight of remittances. We already have a problem with retirees moving "some place nice", and removing the economic activity that their social security checks are supposed to provide to american businesses.
I'm not opposed to everyone getting a living wage. But they must be given the opportunity to contribute to the economy and the human condition too.
This is why I'm a huge proponent of food stamps and think that a major expansion of the food stamp program could be the right way forward for America.
Food stamps buy groceries and only groceries, these groceries come from local stores. Those stores buy predominately locally made supplies (meat, fruit, veggies etc) , the farms hire local people and the stores hire local people. Local people like the children of the food stamp recipient, allowing that family to contribute back. That's just some personal thoughts on the matter though and not particularly relevant to viva and it's goals.