про 2 года читайте Official Website of the Department of Homeland Security http://www.uscis.gov/adoption/bringing-your-internationally-adopted-child-united-states//If your child does not meet the requirements for the Hague or the non- Hague adoption processes, you may still be able to file Form I-130, Petition for Alien Relative, on his or her behalf as the adopted child of a United States Citizen. Parents must accrue two years of legal and physical custody and obtain a full, final adoption of the child to be eligible to file an I-130. //можно прогуглить т найдете много разъяснений на юридических сайтах. Вот, например, сайт попался:http://www.hooyou.com/adoption/faq.html    Q: We, a couple with U.S. permanent residency, wish to adopt a foreign orphan and bring her to the U.S. Must we live with her for two years and have custody over her for two years before petition for her immigration?    A: Yes, you have to live with her for two years and have custody over her for two years before petitioning for her immigration.