Contact an International Adoption agency that specializes in his home country. You can find more info on international adoption at adoption.state.gov
Best of luck!
Bring him to the United States and fill out the proper paperwork to legally adopt him, but first make him a legal citizen.
You can adopt someone to be your child but to be your nephew he had to be adopted by your siblings. Then he will be your nephew. There is no nephew-adoption.
Technically you can't adopt him because he is an adult. You can take him into you home though.
Absolutely, if you are an adult .
This depends on the legalities of the area you live in as well as the wishes of the mother/family.
only if your brother or sister adopts it
Adopt Sohrab, Hassan's son and Amir's nephew
He legally adopted a nephew of his wife and named him Andrew Jackson, Jr.
You can go ahead and adopt- immigration status is not something that would prevent the adoption. If you want to adopt merely to give the nephew legal status- then no, the adoption would do NOTHING. (the cutoff age for giving immigration status is 16).
Migrant
Only if the court has taken her parental rights away or she have given them up to the state, can that happen. Then it's the state that decides who will adopt the child. If she has her parental rights you can not adopt without hers and the fathers consent.
I assume your nephew is a minor. If you live in the United States and he is not a citizen of the United States, there is a procedure you can use to make him a citizen. There are immigration lawyers who are familiar with the process.
Yes, Louisa May Alcott did take in her nephew, Fred Pratt, after the death of his parents. She raised him as her own and he became an important part of her family.