The Dehui United Law Firm is a specialist in U.S. Immigration and Non-Immigrant Services. The scope of services is as follows: work visa (H-1B), work visa for internal company employees (L-1), outstanding scholar work visa (O-1), non-immigrant status conversion, J-1 return restriction exemption (exchange program participation person), F-1 student visa, B1/B2 business tourist visa, family immigration, I-130 petition, US citizen fiancee/fiance/spouse petition, marriage green card, consular process, adjustment of status, travel documents, work authorization, citizenship Application, National Interest Waiver (NIW), Outstanding Talent (EB-1A), Outstanding Professor/Scholar (EB-1B), Manager/President of Multinational Corporation (EB-1C), Labor Certification (PERM), Investment Immigration, Adjustment of Status, Consular process, reentry permit, work authorization, asylum application, immigration court appearances, immigration court appeals, federal court appearances.