[Q] I lawfully earned $500,000 + in US which is sitting in US bank, and I brought additional money from abroad. Is this OK?
[Q] I lawfully earned over $500,000 USD in the US, and that money is in my US bank acct. I also brought additional money from abroad. Do I have to show that these money brought from abroad was also lawfully earned?
The answer is No. If you had to show lawful source for all 100% of your entire assets, even Bill Gates would not be able to do that. Usually, the only thing that is required is for you to show that you lawfully earned the requisite investment amount for EB-5. Having said this, however, in limited cases, USCIS might ask for additional docs and proof; therefore, a careful planning might be required; and you should discuss in detail with your U.S. immigration attorney.