Understand the reason, consult with experts, reapply, or appeal the decision if applicable.

Valid passport, completed application form, photographs, proof of funds, travel itinerary, purpose of visit documents, health insurance, background information, employment/academic records, and any additional required documents.

Submit your completed Form N-400 along with the required documents and the filing fee to the U.S. Citizenship and Immigration Services (USCIS). You can apply online or by mail.