You can sponsor him thru employment. In other words, you have to hire them to work for you. I am not sure if you can just bring them under some other type of visa and that only requires you to pay all his/her livings expenses without working for you, but there may be. You better check with the USCIS or an Immigration attorney.
An immigrant can get another sponsor if the sponsor if the immigrant is on H1B. But the new sponsor need to file a new H1B for the immigrant.
In some cases, a sponsor of an immigrant is financially responsible for them under the Affidavit of Support form. This means that the sponsor is legally obligated to provide financial support to the immigrant and ensure they do not become a public charge.
Yes, and success often occurs, but not always. The Immigration process can be long, drawn out and very frustrating.
Yes.
you can be any age to get sponsored, if your good at the sport that's all that matters.
No, uncle won't help. The laws allow immigrants to sponsor immigrant visas to their families which mean parents, spouses and children.
Your question reveals an unconscious bias. You said,= "How can a US citizen sponsor an illegal immigrant...." = If you "sponsor" them, they are not an "illegal immigrant." Careful, the way your question is phrased says a lot about you. The very term "illegal immigrant" is insulting to ....migrant workers, especially. Mexican citizens surely don't like the phrase and, by the way, Superman was apparently an "illegal immigrant" and you SURELY wouldn't want to insult HIM.
A lawful immigrant who has become a naturalized American Citizen can become a police officer, but not an immigrant/alien who has not become a US citizen.
No, only when the child is an adult (18) can they request a green card for the parents. They will be illegal until then, unless they marry a citizen or get an employer to sponsor them.
Yes, the sponsor must maintain the immigrant up to 125% of the poverty level until death, citizenship, or 10 years.
No. An adult cannot adopt another adult.
The Sponsor is a second adult who practices their faith, who can guide you in your spiritual journey. The Sponsor witnesses your vows, and will assist you if you choose to ask them questions or seek guidance. This person is like an adult spiritual mentor for you.