Two questions about sponsors studying in the United States!

Now I will answer your questions separately:

1. The guarantor can be the applicant himself or his parents and other immediate family members, and it is not recommended to have biological brothers and sisters as guarantors;

It is suggested not to use relatives and friends living in the United States as guarantors. Please try to use yourself or your parents as a guarantor. Otherwise, the visa officer always doubts whether your family has enough financial ability to support you to complete your studies. On the one hand, having relatives and friends who have obtained immigration status will also increase your immigration tendency.

I hope I can help you.