The process for appealing an immigration decision made by the Immigration and Naturalization Service (INS) involves multiple steps. The first step is to file a motion to reopen or reconsider the decision with the INS. If the motion is denied, the next step is to file an appeal with the Board of Immigration Appeals (BIA). The BIA is the highest administrative body for interpreting and applying immigration laws. If the BIA denies the appeal, the next step is to file a petition for review with a federal court of appeals. The federal court will review the decision of the BIA to determine if it was based on a legal error or if it was arbitrary and capricious. If the federal court denies the petition, the final step is to file a writ of certiorari with the Supreme Court of the United States, asking the Court to review the lower court's decision.