It's been a couple of days now. I assume he is illegal and doesn't want you to state such in public like this. Do not worry, we do not make reports here and I will not ask for his private information. As to your questions, there are 5 ways to come to the U.S. to live permanently. They are through family, through employment, through asylum, through investment, or through the lottery.
For family, it must be immediate family such as U.S. Citizen spouse or U.S. Citizen children over 21 in order to be able to come immediately. U.S. Citizen or Lawful Permanent Resident parents or U.S. Citizen siblings, or Lawful Permanent Resident spouses can also help you, but the wait for that is about 4 to 12 years or so.
Through employment, you would have to generally prove that you would not be taking away a job from a U.S. worker and the less experience and education you have, the harder that is to do.
Through asylum, you must prove that you will be persecuted, tortured or killed if you stay in your country and that this will happen to you because of your nationality, race, religion, political opinion, or membership in a particular social group, not because you would run the same risk as anyone else in your country to fall victim to a crime or bad economic conditions.
Through investment, you are looking at generally $1,000,000.00 for a residency, or $500,000.00 in an area designated as a high-employment area, plus in both cases the investment has to create 10 or more jobs for U.S. workers.
And through the lottery, it would be very difficult to win one of the 50,000 visas available per year and some countries do not qualify.
Then there are some visas available that some may lead to Residency. Some of the visas available through employment (if you have a job offer and you qualify) are:
H-1B for professional workers
H-2A for seasonal agricultural workers
H-2B for seasonal nonagricultural workers
H-3 for industrial trainees
Then there are the F-1 and M-1 for students and J-1 for exchange visitors.
And then there is the E-1 for treaty traders and E-2 for treaty investors (these types of visas are not available in all countries).
Here is a link to most of the available non-immigrant visas:
If he is legally inside of the U.S., he can change status to a derivative status through you. If it is illegally in the U.S. because he entered the U.S. legally but overstayed, he will have to wait for you to become a U.S. Citizen before you can help him get Residency status.
Please let me know if you have additional questions and please do not forget to rate my service to you (not the state of the law) as that is the only way that I can get credit for my assistance.Even after you rate the service, I can still answer additional questions for you without additional charge.If you do rate me positively, a bonus is always appreciated. If you would like to request me in the future, just go to http://www.justanswer.com/law/expert-guillermosenmartin/. Thank you!