Your Partner in Overcoming Immigration Challenges

Helping Individuals, Businesses and Organizations Nationwide to obtain their Visas, Green Cards and Citizenship.

N400 Harbor Immigration Law

N400 Harbor Immigration Law, P.L.L.C. is a full-service immigration law firm located in Pompano Beach, Florida. In addition to serving clients in Florida, we help individuals, businesses, and organizations nationwide to obtain visas, Green Cards, and citizenship.

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Comprehensive Immigration Services You Can Trust

At N400 Harbor Immigration Law we understand that the United States of America is a melting pot of immigrants from all over the world. We also are aware of the legal challenges that many immigrants who are coming and seeking to stay in the U.S. face every day. Here at N400 Harbor Immigration Law we work tirelessly and compassionately to help our clients navigate the complexities of the U.S. immigration legal system.

We are invested in your story and provide legal services with a high level of expertise and care. We would be honored to represent you, so you can plan and build your future in the United States of America.

Our Services

Legal Associations

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Dario Castañeda, ESQ

Founder & Managing Attorney

Mr. Castañeda concentrates his practice in both family-based and employment immigration law and has extensive experience in removal proceedings.

Immigration News

Grounds of Inadmissibility: Common Reasons and Solutions

Everyone dreams of building a better future, and for many, the United States symbolizes opportunity and hope. However, the journey to achieve this dream can be…

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Can Green Card Holders Be Denied Entry?

You finally got it—your Green Card. For many, it’s a dream come true, symbolizing stability, security, and the chance to fully embrace life in the United…

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Green Card Approval After Medical Exam: What to Expect

Applying for a green card is a significant step, and one important part of the process is the medical exam. It’s not just a box to…

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I-551 Stamp Without an Appointment: What You Need to Know

Did you miss your green card renewal or need proof of your permanent resident status? Don’t panic—there’s a solution. Whether you’re gearing up for travel or…

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Need Asylum Protection? Learn How We Can Help You Stay Safe

If you’re in the U.S. and fear returning to your home country due to persecution based on your race, religion, nationality, political views, or group membership,…

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What Happens If I-751 Is Denied?

Form I-751, the Petition to Remove Conditions on Residence, is an important step for conditional green card holders looking to secure permanent residency. If your I-751…

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Is Cuban Adjustment Act Still In Effect

The Cuban Adjustment Act (CAA) has long stood as a beacon of hope for Cuban immigrants seeking a pathway to permanent residency in the United States.…

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Infopass Appointment Explained: When and Why You Need One

The U.S. immigration process can feel overwhelming—questions pile up, documents seem endless, and clear answers can be hard to find. At N400 Harbor Immigration Law, we’re…

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Denied a Visa? Understanding 214(b) Refusals

Planning a trip to the U.S. is exciting, but that thrill can quickly fade if your visa application is turned down. One of the most common…

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Can I Get a Green Card After 10 Years in the U.S.?

The American Dream—it’s a powerful aspiration for so many. But what if you’ve been in the U.S. for a decade, living and contributing, yet still haven’t…

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Stories from Our Satisfied Clients

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