I am a U.S. citizen, and will apply for immigrant visa for my brother.
What is the application process to get an immigrant visa for a brother
of a U.S. citizen?
start the immigrant visa application process for U.S. citizen's brother
or sister, the U.S. citizen will need to file an immigrant visa
petition using USCIS Form I-130, with the proof of U.S. citizenship and
the proof of siblings. Other evidence includes both person's birth
certificate and showing at least one parent in common.
If the U.S. citizen and his/her brother or sister are related only
through a father with different mother, U.S. citizen will also need the
father's marriage certificate from his marriage to U.S. citizen's
mother, and the one from his marriage to his/her sibling's mother.