In the United States, immigration appeals generally fall into three categories: filing an appeal with the Administrative Appeals Office (AAO) within U.S. Citizenship and Immigration Services (USCIS), appealing to the Board of Immigration Appeals (BIA)—the higher authority over the immigration court system—or seeking judicial review in federal court. Each of these bodies has its own jurisdiction and procedures.

Under 18: USCIS follows precedent, so a parent abandoning LPR invalidates the child’s green card. Ages 18–21: depends on custody. Over 21: unaffected.

Presidential Proclamation 9645 was the subject of many legal challenges brought in federal courts.  On June 26, 2018, the United States...