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Happy clients, happy attorney.


Katia Teirstein has been awarded “Client Choice” multiple years in a row by the independent review platform Avvo, as well as being named a New York Metro Super Lawyer” for the last three years in a row. See what our clients are saying about us on Facebook, Linkedin, and Avvo.

Katia is an outstanding immigration lawyer!! Before choosing to work with her, we met several other lawyers but she was by far the best. During the first interview, everything was clear, we felt that the E-2 process with

her would be "easy" if we follow all the milestones she set up with us.



- Charles, E-2 Investor

She is most knowledgeable of Immigration Law and followed through on updates to keep us all informed on the progress.

She handle two of our O-1 Visa applications and both were successful.  It was a pleasure working with

such a pleasant professional who truly knows her "stuff." 


- Paula, Last Rites Tattoo Theatre,

O-1 Visa

It's great to work with Katia because she is always available and responded to all my questions very quickly with a great attention to details. Working with her was really easy and she made me feel comfortable during the entire process. She goes the extra mile, I appreciate that she came with me for my citizenship interview, helping me to be more relaxed and confident.


- Guillaume, Green Card & US Citizenship


Katia successfully guided me through my green card application, with total professionalism. Her generosity of time and advice during the consultation process was invaluable. Her responsiveness and legal expertise meant we were fully prepared and organized for what could have been a daunting experience with a less proficient and dedicated lawyer.


- Sylvia, Green Card

Professional. Trustworthy. Of great assistance. Always available. There aren't enough words in my vocabulary to say how pleased I was with Katia Leiselsen's services. She's a great lawyer and terrific person, really interested in hearing your story so she can help you with your visa process. It certainly worked for me.



- Fabrice, O-1 Artist Visa

Katia helped me obtain my green card and was AMAZING! Not only was she very professional and well organized, she was incredibly friendly and made this process much smoother and easier to handle than I would ever have imagined. After years of dealing with student visas and debating what option would be best for me, Katia explained all my options in a very clear and comprehensive manner with a breadth of knowledge and expertise that made it easy for me to make my decision to get a green card.


- Amelie, Green Card

Katia is probably the best lawyer I had the chance to work with. I got almost 5 different visas (with different types), she always has been on top of everything, providing outstanding results. Her last achievement as my lawyer was to get me and my business partner an E-2 treaty investor visa for a tech startup, which was complex to file.​


- Benjamin, E-2 Investor

Katia was recommended to my partner and me by a good friend who works frequently with her when we were thinking of getting married and going through the spouse-sponsored green card process. After dealing with different lawyers for the past 5 years for my H-1B visa, Katia is by far the most talented and devoted lawyer I have ever worked with. 


- Laurent, Green Card

This is the second time that Katia works on an immigration case for me and once again I am thrilled with her work. She will go out of her way to research all options, even with a tricky case. Most importantly she is fast, responsive, and always available to answer any questions. She is serious about following procedure and explaining it to all parties involved. We got the visa in record time and as easily as could be.


- Marie, H-1B Visa


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