There is not really any way to sponsor someone other than through family connection. The visa categories and preferences are geared toward family relationships. Employers can sponsor people who meet certain qualifications and can pass a labor market test... An individual can help sometimes by offering to sponsor temporary expenses if a person comes here to visit. This is a good question. Many people assume that they can help someone come here, and the truth is that they really cannot do that.
This is general advice, and does not constitute an attorney client relationship.
No. You have to have either a qualifying employment or qualifying relative.
This reply is intended only as general information and does not constitute legal advice in any particular case. This reply does not create an attorney/client relationship.
If the person is truly wealthy, the person can give you $750,000. With that money, you can find one of the groups through whom you can invest $500,000 or more. The rest of the money is for your processing fees and living expenses. With the investment, you can eventually obtain legal permanent residency for you, your spouse, and unmarried children under 21.
On another hand, many very wealthy persons do not want to be US citizens or legal permanent residents because their world-wide incomes are subject to US income taxes.
You should review the specific facts with your attorney to see what legal options you may have.
No, there is no such possibility. Immigration is through close family relationships, employment based visa petitions, investment, or political asylum.
The herein content is for general informational purposes only, and may be predicated on incomplete facts. It should not be relied upon in making legal decisions or assessing your legal rights or risks. Neither does the herein reply create an attorney-client relationship.