Thank you again for the answer.... And yes, I have a wife here, which is Brazilian too... I thought of and had previously read about the possibilities you mentioned... The one that seemed most "plausible" was opening a business there and creating jobs for US citizens as you mentioned, but that would make me do exactly the opposite of what motivated me to get into trading... LOL... I thought also about sending my track record to trading firms and/or banks so that they´d hire me, not because of the salary obviously, but because of the permit that would be given to me because of the work contract, but that would make me incur in the same issue... LOL
My wife has a cousin, whose husband (Italian citizen) moved to the US last year because of a job he got there. But I can´t see how they would be able to help us and even if that were the case, I wouldn´t like to bother them asking for favors. What I´m trying to do is figure out if there is a way to do this without asking favors and still maintain my fully "independent" condition....

That is something that obviously will not be simple, but I´m not desperate or anything.... Just gathering ideas...
Currently trading QQQ. Broker: IB
First of all, banks in the U.S. do not hire the way you suggest via looking at someone's track record nor do any other financial institution unless you've already worked in the industry as a professional trader for another financial institution.
Also, like I said, there's more to your story that you're not revealing. You didn't mention in this thread you had left Brazil already or left another country and was living in Austria. Now you're seeking to live in the U.S. as a retail trader. Then you initially stated in this thread you didn't know anyone in the U.S. and now you state in a follow-up message post that your wife has a cousin in the U.S. but you don't want to ask for a favor.
I will be clear this time...its impossible to get into the U.S. independently the way you seek unless you're very rich or very famous that knows someone that can get such for you beyond you just being a "tourist".
With that said, I get it...you're moving around from country to country for whatever reasons after quitting as a doctor of 5 years for whatever reasons. To do such implies you have money.
I'm sure you have read the U.S. immigration info and you must have read about being sponsored.
What's wrong with you just paying your wife's cousin to sponsor you and your wife ?
It only makes sense why you don't go that route...did you have a falling out with the cousin or your wife had a falling out with her cousin or you've had a falling out with your wife or you're in some kind'uv trouble and you don't want those
sponsoring you to be involved (implicated) or whatever. Yet, I doubt you're in trouble because you wouldn't have asked about sending your trading records to a professional trading firm because that would be the last thing you want to do.
As you can see, I've mentioned the word "sponsor" several times above...that's a big hint and it doesn't involve sending your trading record to someone.
The other option, not a good option if you get into some kind'uv financial problem, legal problem or health problem after arriving...
illegally living in the U.S. but keeping the address of whatever trading account you have. Thus, you would need someone back at that address to forward to you all your mail or you change your address to one of those legal mail box and they forward your mail to you on a monthly basis for a fee. I don't recommend this option especially since you stated you're married and I'm sure your wife is traveling with you.
By the way, next time you open a trading account and you decide to move to another country and you can't get them to accept your new address (info from your other thread)...time for you to get a new broker or find someone you trust in the country of the address you used to open your trading account that will be willing to allow you to use their address as your resident address just for brokerage reasons. I know for fact this works very well because I do such currently for one of my bank/investments accounts in another country.
For the record, if you're just someone like one of my friends that's a world traveler and likes to live in the country for 1 - 2 years before moving to another country (he's lived in 6 different countries as a master carpenter building custom armoire) and is a citizen of two of those countries...its extremely difficult to do such as a
retail trader unless you're very profitable and
you have a very good tax accountant.
Anyways, as suggested, there are ways for you to get into the U.S. legally but you don't seem to be interested in those ways or you seem to be avoiding them beyond the crazy thought of sending you're trading records to a professional financial institution in hopes that they would hire you (essentially sponsoring you)...that will never happen unless you're already a famous/successful professional trader or famous/successful private retail from another country that has connections within the professional financial industry.
P.S. Many famous professional traders (e.g. hedge fund managers) residing in the U.S. and owning property in the U.S. while not a citizen of the U.S...they are being sponsored by the firm they work for, they know someone important or they started their business here and employ U.S. workers. They all still maintain an address in whatever country they're a citizen.