Brothers and Sisters are eligible to apply for permanent resident status which belongs to the category of F-4--family fourth preference. This category is assigned a numerical limitation. What’s more, the spouse and minor children of the beneficiary can immigrate with him or her together without filing a separate petition.

1. Qualification
(1). Petitioner
① US Citizens
② Have sufficient financial ability to support the intending immigrant siblings
③ Be qualified as a sibling of the beneficiary.

(2). Beneficiary
A Sibling is a brother, sister, stepbrother, stepsister, or adopted brother or sister. For the necessary sibling relationship to exist, each person must have been a child of at least one of the same parents. The siblings need not share the same biological parents as long as both became children at the appropriate time. (before 16 in cases of adoption, and before the age of 18 for stepchildren)

2. General Case Procedure
First, file I-130 form along with other supporting documents to the USCIS. After that, the petitioner will receive I-797 approval notice and the USCIS will transfer the case to NVC (National Visa Center). For categories like F-4 which need to wait for quotas, NVC sends out Visa fee payment bill when the petitioner's priority date is close to becoming current . After the payment, NVC will send out package 3.
Then, finish package 3 and send it back to NVC. NVC will transfer the case to US consulate appointed after background-check (If pass it, package 4 will be send to you). Around this time, the beneficiary needs to get medical examination and be prepared for the consulate interview.
Finally, if the interview goes well, the beneficiary will be approved to have his or her immigrant visa.

3. Filing Material
Application Letter
I-130 Form
Filing Fee
Supporting documents: for primary documents, the petitioner has to provide certificate of Citizenship or Naturalization, birth certificate, FS-240(report of birth abroad of a US citizen); for secondary documents, school records, baptismal certificate and so on.