We are a couple who recently got married in Brazil, and one of us is an American citizen or a Legal Permanent Resident in the U.S. How can we move to the United States together?
You need to apply for an immigrant visa for the spouse who is not a U.S. citizen or Legal Permanent Resident. CR-1/IR-1s are the immigrant visas for Brazilians who have married an American citizen in Brazil, when the couple wants to live in the U.S. If the American is currently living in the U.S. he must file the petition at the local USCIS office (they must file the I-130 petition, which can be found on the USCIS website). If the American is currently living in Brazil, then he or she can file the petition here at any consulate, but it will be forwarded it to the Rio de Janeiro Consulate, where all immigrant petitions are processed for Brazil. Note: if the spouse is a Legal Permanent Resident, rather than an American citizen, then he or she must file for an F2A visa for the immigrating spouse, and can file this form only in the U.S. More information is available at this link.
