New Hampshire Immigration Lawyer for Families and Professionals

About Attorney Jason M. Sullivan

Jason M. Sullivan has focused exclusively on U.S. immigration law for more than two decades. He has represented hundreds of families, skilled professionals, and employers navigating the complex federal immigration system, building a practice rooted in deep subject-matter knowledge and meticulous case preparation.

His approach is straightforward. Clients work with him personally, not through layers of paralegals or case managers. Every petition, every supporting document, and every legal argument is reviewed and shaped by an attorney who understands how adjudicators evaluate evidence and where cases succeed or fail.

Over years of concentrated practice in New Hampshire, Attorney Sullivan has developed a thorough understanding of the procedural expectations at the USCIS National Benefits Center, the Nebraska and Texas Service Centers, and the U.S. Embassy and Consulate offices that process cases for New Hampshire residents and Miami-area clients. That institutional knowledge translates into filings that anticipate questions before they are asked and documentation packages that leave little room for Requests for Evidence.

Immigration decisions carry life-changing consequences. They deserve representation from an attorney who treats every case with the seriousness it demands.

Our Approach to Immigration Representation

Immigration law is procedural, but successful outcomes are strategic. Forms alone do not secure approvals. Clear documentation, careful legal framing, and thorough preparation are what move cases forward.

Every case accepted by our firm is prepared as if it will receive close, skeptical examination by a USCIS Immigration Officer or Consular Officer, because it will. We build files that tell a coherent, well-documented story. We identify potential weaknesses before the government does. We organize evidence so that adjudicators can follow the logic of a case without confusion or unnecessary follow-up.

Transparent, Fixed Legal Fees

• No hourly billing.
• No surprise invoices.
• No uncertainty about scope.
• You understand the total legal fee before work begins.
• Immigration law is complex. Your legal billing should not be.

This is not a volume practice. We do not process applications on an assembly line. Clients come to our firm not simply to file paperwork, but to move forward with clarity, confidence, and a strategy that accounts for what comes next.

Immigration Services for Families

Family-based immigration is the foundation of our practice. We represent U.S. citizens and lawful permanent residents petitioning for spouses, parents, children, and siblings, as well as couples navigating the K-1 fiancé visa process from initial petition through Adjustment of Status and beyond.

• Marriage-based green cards
• K-1 fiancé visas
• Adjustment of Status
• Consular processing
• Removal of Conditions
• Naturalization and U.S. citizenship

Our family immigration practice covers marriage-based green cards, K-1 fiancé visas, Adjustment of Status, consular processing, Removal of Conditions (Form I-751), and naturalization. These cases require more than correctly completed forms. They require credible, well-organized evidence that demonstrates the legitimacy of relationships and the eligibility of applicants. We prepare that evidence with discipline and attention to detail, knowing that the quality of the initial filing often determines whether a case moves forward smoothly or stalls with requests for additional documentation.

For couples in particular, the stakes are personal. A delayed or denied petition affects where your family lives, whether a spouse can work, and when your life together in the United States can truly begin. We understand those pressures and structure our process to reduce uncertainty at every stage.

Employment-Based Immigration for Professionals and Employers

We represent skilled professionals and their employers in employment-based immigration matters, with particular depth in PERM labor certification, EB-2 National Interest Waiver petitions, employer-sponsored immigrant visa petitions, and carefully selected EB-1 extraordinary ability cases.

• PERM labor certification
• EB-2 National Interest Waivers
• Employer-sponsored immigrant petitions
• Select EB-1 extraordinary ability cases

Employment-based immigration requires precision. PERM labor certification involves strict regulatory requirements around recruitment, prevailing wage determinations, and documentation timelines. A single procedural misstep can invalidate months of work. We manage the process from beginning to end, coordinating with employers and employees to ensure compliance at every stage.

For professionals pursuing EB-2 National Interest Waivers, we develop petition strategies that clearly articulate how the applicant’s work serves the national interest of the United States, supported by evidence that meets the analytical framework established in Matter of Dhanasar. We invest significant time in structuring these petitions because the quality of the legal argument and supporting documentation is often the deciding factor.

EB-1 extraordinary ability cases are accepted selectively. These petitions require substantial documentation of sustained achievement and national or international recognition. When we take on an EB-1 case, it is because the evidence supports a strong filing, not because the fee justifies the attempt.

We do not handle removal defense, deportation cases, or asylum matters. That narrow focus allows us to maintain higher standards of preparation in the family-based and employment-based matters we do accept.

A Structured, Attorney-Led Process

Our firm operates differently from high-volume immigration practices. When you retain the Law Office of Jason M. Sullivan, PLLC, you communicate directly with Attorney Sullivan throughout your case. Documentation is reviewed carefully before submission. Filings are organized, deliberate, and thorough. Communication is clear, timely, and responsive.

This is not a practice where your file sits in a queue until a deadline forces action. Cases are managed proactively, with preparation timelines built around strategic goals rather than last-minute urgency.

Serving New Hampshire, Miami, and Select Clients Nationwide

Our home base is New Hampshire, and the majority of our practice is built around representing families and professionals throughout the state. For more than twenty years, we have served clients in Manchester, Nashua, Concord, Portsmouth, Derry, Keene, Lancaster, and communities across the state. We understand the needs of New Hampshire’s immigrant communities, the local professional landscape, and the specific procedural pathways that apply to cases originating here.

We also maintain a select practice serving clients in Miami and throughout South Florida, including Coral Gables and surrounding communities. Miami’s diverse immigrant population and international business community create unique immigration needs, and we bring the same disciplined, attorney-led approach to those matters.

Because immigration law is federal, geography does not limit the quality of preparation. Our firm is structured to work efficiently with clients through secure video consultations, encrypted document portals, and streamlined digital case management. Whether you are in Concord, New Hampshire or Coral Gables, Florida, you receive the same direct attorney involvement, organized preparation, and responsive communication.

Selective Representation

We accept a limited number of new matters each month. That constraint is intentional. It ensures that every client receives the preparation, attention, and strategic thinking that complex immigration matters require. Not every inquiry results in representation. When we accept a case, we commit to preparing it with the thoroughness and discipline it deserves.

Begin with a Consultation

Every case begins with a structured consultation. During that conversation, we evaluate eligibility and identify potential concerns, explain available legal pathways and realistic timelines, discuss government procedures relevant to your specific situation, and outline a fixed legal fee for standard matters.

During your consultation, we will:

• Evaluate eligibility and potential concerns
• Identify available legal pathways
• Explain timelines and government procedures
• Outline a fixed legal fee for most standard matters

You will leave the consultation with clarity about your options and what the process ahead looks like, whether or not you decide to move forward with our firm. If we proceed together, your case will be prepared with care, discipline, and strategic intent from the first document to the final decision.