Brothers Jamal and Omar came to the United States on F1 student visas. Omar fell in love with a U.S. citizen and obtained his lawful permanent residency through that marriage. After three years, Omar naturalized. Once he became a U.S. citizen, he was able to petition for his father and bring him to live in the United States as a lawful permanent resident. Jamal has always kept his visa paperwork up-to-date, and he continues to be a lawful nonimmigrant. Jamal is now a 25 year-old graduate student and single. He is wondering if his father or brother can help him get his residency. What is Jamal's foreseeable options? What are the immigration laws being applied here?