Services

Z&A is dedicated to the practice of all aspects of US immigration law, with a focus on business-related and employment-based US immigration law. Because of our expertise and dedication to clients, Z&A has experienced rapid growth in recent years. In 2002, it was honored as the only law firm on The Houston 100, a ranking of the fastest-growing private businesses making the great economic impact on Houston, TX. It also opened a branch office in Chicago, IL, to accommodate its rapidly increasing client groups in Midwest region.

Headquartered in Houston, TX , and with a branch office in Chicago, IL, Z&A can handle US immigration cases anywhere within and outside the US by using the latest technology in providing professional services to our clients since immigration is based on federal law. Please click here to see the map of our clients' locations in the United States.

Z&A provides the following immigration services:

Non-immigrant Categories

  • H-1B (Specialty Worker)
  • J-1 Waiver (Exchange Program Participants)
  • J-1 Advisory Opinion
  • Third Country Visa
  • O-1 (Outstanding Researcher)
  • L-1 (Intra-company Transferees)
  • K Visa (Fiancé/Spouse of U.S. Citizen)
  • Change/Extension of Non-immigrat Status
  • Immigrant Categories

  • NIW (National Interest Waiver)
  • EB-1(a) (Alien of Extraordinary Ability)
  • EB-1(b) (Outstanding Professors/Researchers)
  • EB-1(c) (Managers and Executive Transferees)
  • EB-5 (Investor Visa)
  • Labor Certification
  • RIR Labor Certification (Fast Track)
  • Adjustment of Status
  • Concurrent Filing of I-140 & I-485
  • Consular Processing
  • Asylum
  • Travel Documents
  • Foreign Nurses Immigration
  • Work Permit
  • Family Based Immigration

  • Adoption
  • Divorce
  • Marriage

    China Law Consultation
  • Antidumping
  • Finance
  • Arbitration & Litigation
  • E-Commerce
  • Corporate
  • Foreign Direct Investment
  • Intellectual Property
  • International Trade
  • M&A
  • Securities


    Other Services
  • Services to Other Attorneys
  • Set-up of a Corporation
  • Application for a Sales Tax Permit
  • Copyright
  • Trademark Application

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    Adjustment of Status | Adoption | Advance Parole | Application Fees | Asylum & Removal | Business Entities | Corporate Clients | Consular Processing | Divorce | E-1 & E-2 | EAD | F-1 | Family Immigration | FAQs | Forms | Investor Visa | Immigration Glossary |
    K Visa
    | L Visa | Marriage | Naturalization | Non-immigrant Visas | O-1 | Processing Time | Road to Green Card | TN | Visa Bulletin

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