Lesley Hauser
  • Immigration Law, Family Law
  • Massachusetts
Claimed Lawyer ProfileSocial Media

Nearly 45 years ago Joseph F. O'Neil opened up his law office to countless immigrants in the Greater Boston Area. O'Neil's mission to help people navigate the U.S. immigration system, remains the driving force behind O'Neil Hauser Mansfield, P.C. today. After over a decade of experience working with O'Neil, I took over as president of the firm in 2008. We continue to follow our founder's tradition, while adapting to the ever-changing face of the American immigrant. As president of O'Neil Hauser Mansfield, P.C., I supervise a skilled team of immigration lawyers and paralegals as we represent both individuals and corporations in all aspects of immigration law. From advising companies in immigration compliance, to helping families obtain green cards, I have extensive experience with the U.S. immigration system. I am fluent in Spanish and proficient in Portuguese, allowing me to communicate with many immigrant clients on a direct and personal level.

Loyola University New Orleans
J.D. (1994)
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Middlebury College
M.S. (1991) | Spanish Language & Literature
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College of the Holy Cross
B.A. (1990) | Spanish Language & Literature
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Professional Experience
O'Neil Hauser Mansfield, P.C.
- Current
As President of our law firm, I continue to oversee a team of immigration lawyers in the practice of immigration law.
Senior Associate Attorney
Law Offices of Joseph F. O'Neil, P.C.
I supervised a staff of immigration lawyers and paralegals in the practice of immigration law, under the direction and leadership of Attorney Joseph F. O'Neil.
Speaking Engagements
US Visa Options for MBA Students
Hult School of Business
Business Lunch Roundtable
Pepper Hamilton LLP
Immigration Options for Emerging Entrepreneurs
Babson College School of Business
Immigration Topics for the Entrepreneur
MIT Sloan School
Professional Associations
American Immigration Lawyers Assocation
- Current
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Massachusetts Bar Association
- Current
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Massachusetts State Bar
- Current
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Jurisdictions Admitted to Practice
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1st Circuit
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U.S. District Court
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  • Credit Cards Accepted
  • Rates, Retainers and Additional Information
    We also accept cash or check.
Practice Areas
Immigration Law
Asylum, Citizenship, Deportation Defense, Family Visas, Green Cards, Immigration Appeals, Investment Visas, Marriage & Fiancé(e) Visas, Student Visas, Visitor Visas, Work Visas
Family Law
Adoption, Child Custody, Child Support, Father's Rights, Guardianship & Conservatorship, Paternity, Prenups & Marital Agreements, Restraining Orders, Same Sex Family Law
  • English
  • Portuguese
  • Spanish
Websites & Blogs
Lesley Hauser's Website Profile
O'Neil Hauser Mansfield, P.C. Website
Contact & Map
O'Neil Hauser Mansfield, P.C.
105 Main St
Charlestown, MA 02129
Telephone: (617) 426-8100
Fax: (617) 426-2217