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Cain W. Oulahan

Immigration Attorney at Milwaukee, WI

4.5   8 reviews
  • Licensed for 13 years
    State WI
    Acquired 2011
    Good Standing No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Cain

Learn Cain’s areas of practice.

Practice area

I feel it is my duty to be actively engaged in my community through pro bono service and volunteer work. I participate in the Marquette Volunteer Legal Clinic, providing free advice to low-income residents. I have served as the Chair of the Wisconsin Chapter of the American Immigration Lawyers Association and as President of the Wisconsin Hispanic Lawyers Association. I have given numerous presentations on immigration law and policy at non-profit organizations, schools, and churches. I have also appeared several times on the Telmundo Wisconsin television program Buscando Soluciones to talk about immigration issues. I really enjoy engaging with people and providing accurate information to the community. 


In my free time I enjoy spending time with my family, playing soccer, fishing, reading and watching movies. 

Photos and videos


Murrar, Oulahan, Rivas & Hochstatter, LLC
610 W. Lincoln Avenue
Suite 2B
Milwaukee, WI, 53215

Immigration lawyers nearby


4.5 / 5.0
  8 customer reviews
5 Star
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1 Star
Posted by Cecilia | September 12, 2023
This review is from a person who hired this attorney.
| Hired Attorney
Lo recomendó
Yo recomiendo al abogado caín porque hace un exelente trabajo el estuvo siempre muy al pendiente de mi caso apesar que estuve 4 años en México esperando por mis papeles para poder regresar a Milwaukee con mis hijos nunca me abandono el trabajo mucho para traerme de regreso yo estoy muy agradecida con el abogado porque gracias a el ahorita estoy feliz con mis hijos que Dios bendiga al abogado siempre .
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Posted by Andrew | September 30, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Attorney--pleasant, knowledgeable and professional
I have employed dozens of lawyers in my life--but never felt strongly enough to review one on AVVO. Cain assisted us with completing my wife's green card application, travel permit application and sponsorship paperwork. I have two graduate degrees (business, not law) but would not have wanted to submit these forms without competent counsel. Our application was accepted without issue, my wife has already had her biometrics meeting, and I am confident that everything will go smoothly from here forward, owing to Cain's excellent work upfront. I cannot recommend him enough! Five stars. Grace’s greencard was approved earlier this week and arrived today. Thanks again, Cain!
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Posted by Rainer | March 28, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Our K-1 Visa and Green Card Experience with Cain Oulahan
My wife and I hired Mr. Cain Oulahan for my K-1 fiance visa process and Green Card (with conditions). Cain was extremely professional and attentive to our needs and questions. I truly felt he cared about our success. I was successfully granted my K-1 visa, as well as my Green Card. I would not recommend going through the marriage-based Green Card process without legal representation because of the intricacy of the case, especially preparing the application documents. Cain helped us organize all our documents and made sure we had more than enough evidence to put forth in our interview. If you find yourself feeling insecure about the daunting immigration process ahead, I strongly recommend reaching out to Cain. We plan on hiring him in the future to remove the conditions on my Green Card.
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Posted by Rip | March 28, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Essential for both our green card and subsequent lifting of restrictions
There's nothing simple about applying for a green card for one's spouse, or applying for the lifting of restrictions after the two year probationary period expires. We couldn't have done it without Cain, and in terms of the lifting of restrictions, we even tried. Knowing what documents to gather, what must be translated and how, how to package the application, etc. shouldn't be done without a good lawyer, in our opinion. We didn't end up in court, but if we had, I can't imagine not having a lawyer who'd been with us every step of the way. Our petition to lift restrictions was rejected after being in process for six months past the original green card expiration date. We went back to Cain, who quickly identified and made the necessary adjustments so we could appeal. Our appeal was approved within a month. Throughout all these processes, Cain kept us informed and, frankly, he also kept us from going insane.
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Posted by Miguel | July 7, 2016
This review is from a person who hired this attorney.
| Hired Attorney
One of the best lawyers working for a great Immigration Firm.
I hired Mr. Cain Oulahan for the second time, after he helped me to resolve my revoked Legal Residency Status the first time, to help me become a U.S. Citizen the second time. I have to say that his help was top notch, he was on top of my case, and always communicated with me when needed. I am completely satisfied with the services he provided me with, and today, and thanks to his help, I am a citizen of this great country. I would highly recommend Mr Cain Oulahan to anybody who needs a great service, he can certainly provide you with it! Of course, you need to be prepared, since it depends only on you when it comes to come out with all the documentation needed to successfully present your case to the Immigration authorities. If you're not prepared, they can't pull magic tricks to make you look good, it's 95% your work!
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Posted by Patricio and Lynette | August 6, 2013
We had a great experience working with Cain
We worked with Cain in order to get my husband residency. He had great personal skills and knowledge to be able to inform us on the whole process and walk us through the unexpectedness. He took extra time to answer all questions and left us feeling very confident with our decision. He was willing to go above and beyond by meeting us in Chicago for our interview on not only the snowiest day of the year, but also his Birthday. We would highly recommend Cain and his staff!
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Posted by Mark | August 6, 2013
Immigration Services!
I cannot speaking highly enough of Cain and his colleagues at Straub Immigration. Cain's attention to detail and follow through is second to none. Straub Immigration came highly recommended and they did not disappoint. THANK YOU!
Posted by anonymous | June 5, 2013
Client BEWARE!
I hired Cain to help complete a simple I-751. The application he assembled and submitted was missing basic required material. When one hires an lawyer, money is exchanged for the lawyer's time and expertise. As I had neither, I hired Cain in order to prevent a request for evidence and the dreaded interview. As it turns out, missing required material gives you an automatic request for evidence. I would have been better off doing the form myself! I do not recommend this lawyer unless you like wasting your time and WANT to go to an interview!
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Response from Cain Oulahan July 29, 2013
I regret that the client had a negative experience with our firm. We have a reputation for successfully handling straight forward as well as very complex immigration cases, including I-751's. Our practice is to always submit required information and supporting documentation to the extent that it is available from the client.
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  • Hourly Rates $ 300-300 per hour
Payment methods
Cash, Check, Credit Card


AVVO RATING 8.9 (Excellent)

Work Experience

  • Partner
  • Murrar, Oulahan, Rivas & Hochstatter LLC
  • 2018 - Present
  • Owner
  • Oulahan Immigration Law LLC
  • 2017 - 2018
  • Associate
  • Erich C. Straub, Immigration Attorney, LLC
  • 2011 - 2017


  • Marquette University Law School
  • JD - Juris Doctor
  • 2011


  • American Immigration Lawyers Association - Wisconsin Chapter
  • Chair
  • 2018 - 2019
  • Wisconsin Hispanic Lawyers Association
  • President
  • 2016 - 2018

Languages Spoken

  • Spanish
  • English

Honors and Awards

  • Golden Quill Award for Outstanding Student Comment
  • Marquette Law Review
  • 2011


  • Marquette Law Review
  • "The American Dream Deferred: Family Separation and Immigrant Visa Adjudications as U.S. Consulates Abroad"
  • 2011

Speaking Engagements

Attorney endorsements

Received (4)
Given (4)
Endorse Cain
Immigration Attorney | Aug 05
Relationship: Fellow lawyer in community
"I have worked with Cain in cases involving mutual clients. Cain is extremely knowledgeable, and I highly recommend him. He provided information about the immigration situation that I was able to use to our client's advantage in case negotiations for a positive outcome."
Immigration Attorney | Aug 23
Relationship: Fellow lawyer in community
"Attorney Oulahan is a knowledgeable, approachable, and valuable asset to the community. He is fully bilingual making it easy for both Spanish and English speakers to fully benefit from his expertise. I am glad to endorse him."
Immigration Attorney | Aug 22
Relationship: Fellow lawyer in community
"I endorse this lawyer. He is passionate in his representation of his clients."
Immigration Attorney | Apr 27
Relationship: Fellow lawyer in community
"I have known attorney Oulahan for several years and I have referred clients to him who need assistance in immigration matters. He is smart, very knowledgeable about immigration law, and is very hard working. I fully endorse him and I am pleased to have him as a resource in immigration matters."
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Milwaukee Immigration Lawyer Cain W. Oulahan
Cain W. Oulahan
Immigration Attorney
Milwaukee, WI
Licensed for 13 years