我先下载了纸的I-130做准备，找齐了资料，然后上网File I-130。
最后提示我上传资料，第一项是我的公民身份证明，第二项是兄弟关系证明
Upload a copy of your birth certificate and a copy of your brother's or sister's birth certificate showing that you have at least one common parent.
If you and your brother or sister have a common father but different mothers, submit copies of the marriage certificates showing that your father was married to each mother, as well as copies of documents showing that any prior marriages of either your father or mothers were legally terminated.