Have you tried calling your local Brazillian consulate? Or maybe check the website of the Brazillian embassy in the USA, they should have information on there about visas. Have you tried calling your local Brazillian consulate? Or maybe check the website of the Brazillian embassy in the USA, they should have information on there about visas.
For the US Citizen or the fiancee? The foreign fiancee does not need to have a job waiting in the US for them. In fact, they can not work until they have applied for a temporary work permit once they are in the US. The US Citizen would not need to have a job necessarily, but when filing for a K1 fiancee visa, they need to be able to prove that they meet the financial requirements on an affidavit of support for their foreign fiancee. If they can't then they need a co-sponsor who can prove that they can meet these requirements, and are willing to support the foreign spouse.
If you travel to the US on a k1 fiancee visa, you generally have to apply for a temporary work permit once you arrive. This may take a few months to process, so under normal circumstances, I would say that no, you can't legally work as soon as you arrive.
A "visa" is kind of like temporary citizenship. A "work visa" allows you to work in a country you aren't a citizen of, and a "visa" allows you to live there.
no
It isn't just for TNA, if you are not a citizen of the USA and you want to work here you have to have a Visa
You would need an appropriate work visa in that case.
She would need a UK work visa.
Yes.
yes
Yes, unless you are already a US citizen you will need an immigrant visa that permits you to work, not a tourist visa.
No you will not become a Mexican citizen but you will have Mexican recidency. Your fiancee can have the option to apply for citizenship later on if she wants.
NOPE