Can a U.S. citizen adopt a foreigner? While it is possible to adopt an adult foreigner in the United States, it does not give them a leg up or change the immigration process. In other words, U.S. immigration laws do not extend special benefits based on adult adoption. That said, adopted by a U.S. citizen may entitle the adoptee to inheritance rights.
Can I get a green card if I adopt a U.S. citizen? Family Relationship as Basis for Permanent Residence
You may be eligible to have your U.S. citizen or LPR adoptive parents or U.S. citizen sibling file an immigrant visa petition for you.
How long does Immigration adoption take? In an agency adoption, depending on the workload of the agency selected, it will take anywhere from six months to a year to complete an adoption family assessment. Most adoptive placements occur one to several months after the family assessment has been approved.
Can you sponsor an illegal immigrant? Anyone who intends to sponsor someone else for a green card must fill out and submit an affidavit of support. This affidavit is essentially a legal contract between the sponsor, the person who is filing for someone to get a green card, and USCIS.