
Live and Work in the U.S. With or Without a Sponsor
Green cards and work visas for professionals, multinational managers, founders and investors — in energy, healthcare, technology and manufacturing.


Our partners are immigrants too. We have been through this process ourselves.




Partners involved
in every case
File From Inside the U.S. or From Your Home Country
Either route works. Which one fits depends on your status today — we will tell you straight.
Inside the United States
If you hold an H-1B or L-1 inside the United States: We build your self-petition green card from your current position. Your visa status, your employer, and your location do not limit what we can argue. The EB-2 NIW rests on what your work contributes, not where you sit when you file it.
Outside the United States
If you are outside the United States and planning your move: The NIW process does not require United States presence. You can begin building and filing your case from Latin America, Europe, or the Middle East. BBA represents engineers, physicians, and technical specialists filing from outside the country every year.
Why BBA Immigration
We Build the Case. We Do Not Process It.
BBA Immigration's partners, Diego Bustillos and Adriana Bello, bring over twenty years of combined legal experience, trained at major international law firms, with degrees from NYU and UT Austin. That is not a typical immigration firm background. It is the foundation of a different quality of work product.
BBA was built in Houston for a reason. The firm grew from deep roots in the energy sector, representing petroleum engineers, geoscientists, drilling specialists, and engineering leaders across oil and gas. We have since expanded to healthcare, technology, and manufacturing, and our core remains the same: we treat your record the way the most demanding global firms treat the matters they care most about.
Partners are involved in every file. We commit to one guarantee: if you review your final filing and are not impressed by the work product, we rework it.
Sector Expertise
Energy & Oil and Gas
NIW petitions for petroleum engineers, drilling specialists, reservoir modelers, formation evaluation engineers, and geoscientists. Energy is where BBA started. It is not a new sector for us.
Healthcare & Physicians
NIW cases for physicians, clinical researchers, OB-GYNs, and healthcare administrators. Schedule A fast-track for nurses and physical therapists.
Technology & Software
Self-petition green cards for software engineers, data scientists, ML/AI researchers, systems architects, and cybersecurity professionals.
Employers & Sponsors
PERM labor certification, H-1B sponsorship, and Schedule A filings for companies in manufacturing, construction, healthcare, and technology across Texas.
“Another key factor of the success of my application, was how the BBA Immigration team managed to link the achievements and experiences of my 20 years’ career in the O&G industry with actual US policy, and requirements which is the key to get any NIW application approved. I remember being pleasantly surprised when I read the first draft of the NIW letter produced by BBA Immigration.”
Practice Areas
Field-Specific Legal Strategy for Every Visa Path
BBA builds immigration cases for petroleum engineers, physicians, software developers, and technical professionals. Every case gets partner-level attention from start to finish.
EB-2 NIW
Green Card Without a Sponsor
Self-petition green card without employer sponsorship. The most direct path for STEM professionals.
EB-3 Visa
Employer-Sponsored Green Card
Employer-sponsored green card for skilled workers, professionals, and other workers.
EB-1A
Green Card for Top Talent
Extraordinary ability green card for top professionals in sciences, arts, business, or athletics.
Schedule A
Fast-Track Green Card for Nurses & PTs
Fast-track green card for registered nurses and physical therapists — no labor market test.
L-1
Transfers for Multinational Managers
Move executives, managers and specialized staff from your company abroad to its U.S. office.
TN Visa
Work Visa for Canadian & Mexican Professionals
Work visa under USMCA for Canadian and Mexican engineers, scientists, accountants and other listed professions.
E-2 Investor
Visa for Founders & Investors
Treaty investor visa for entrepreneurs making substantial investment in a U.S. business.
H-1B Visa
Work Visa for Degree Professionals
Specialty occupation work visa for professionals with bachelor's degree or equivalent.
PERM Labor
Labor Certification for Employers
Permanent labor certification — the first step in most employer-sponsored green cards.
Family-Based
Marriage & Family Green Cards
Family-based immigration including spousal petitions, fiancé visas, and family preference.
Client Results
Cases Built. Cases Won.
I would recommend Diego Bustillos and the BBA Immigration team
BBA Immigration did an excellent job on getting my EB2-NIW approved. Given the global uncertainty in regards moving across borders in 2020; the extra effort that the BBA Immigration team made to complete and submit my application timely during the beginning of the pandemic was a critical aspect in my specific case. My family and I needed a way to remain legally in the US, and the BBA team made it possible.
Another key factor of the success of my application, was how the BBA Immigration team managed to link the achievements and experiences of my 20 years’ career in the O&G industry with actual US policy, and requirements which is the key to get any NIW application approved. I remember being pleasantly surprised when I read the first draft of the NIW letter produced by BBA Immigration.
I would recommend Diego Bustillos and the BBA Immigration team, for EB2-NIW applications, in fact I have already recommended them to several people, and some of them already got their NIW approved as well.
Amazing job
Outstanding professionalism! I had a previous bad experience with a different lawyer who prepared a National Interest Waiver (NIW) on my behalf, and it was rejected due to a poor presentation. Somebody recommended me Diego Bustillos and it was a totally different experience, since Diego did an amazing job which was approved in a few months.
Definitely, I recommend Bustillo, Bello and Associates to keep peace on mind during your whole immigration process.
She worked tirelessly
Without the help of the BBA Immigration, I know that I would not have had the successful outcomes I have had. Adriana Bello took on an extremely difficult case and encountered issues that no one expected, and few had ever seen. She worked tirelessly to make sure that the truth was told and presented it perfectly. Her legal skill is great and thanks to her expertise, strategy, and the help of the firm we were able to get my permanent Residence approved. She answers the phone all the time and gives good advice for everything that you need. I am proud to be a BBA Law client and will continue to retain them for all legal matters that may arise as I know I am in the best hands. "I highly recommend BBA Law if you want results!
I fully recommend working with this group
My experience with the firm has been very positive, from the beginning Diego was very clear about the process, strategy and very important "The Cost". He kept to word what we planned at the beginning by giving details on how to proceed with my case. He was able to find the best argument to push for the strongest case which resulted in a very expedite approval. Diego and his team were always in touch, easy to reach.
There are no small letters in the contract, I fully recommend working with this group. Thanks for all the support given!
For Employers
Protect Your People
You insure your equipment. You protect your contracts. You have a plan for your finances. Have you protected the people who built your business?
Before the Crisis
You built this company person by person. The welder who runs your most complex jobs. The dental hygienist your patients specifically request. The construction foreman your entire crew follows without question. Some of those people hold temporary work visas. You may not know exactly which ones, or when those visas expire.
A proactive PERM filing or H-1B sponsorship strategy costs significantly less than a reactive scramble after a status emergency.
During the Crisis
One of your key employees just told you their visa expires in sixty days. Or they came to you with a letter, a notice, or a deadline they cannot fully explain. You have two problems now: the legal one and the human one.
The trust that employee placed in you by bringing this to you instead of quietly updating their resume — that is the one worth protecting. BBA handles PERM, H-1B, and Schedule A filings for companies across Texas. We give you a direct answer at the first call.
We will review your workforce situation and tell you exactly what protection looks like for your company.
Houston Immigration Lawyers for STEM Professionals and Employers
Texas is one of the strongest economic engines in the United States, powered in large part by skilled professionals from around the world who work in energy, healthcare, technology, and manufacturing. BBA Immigration represents these professionals — petroleum engineers, physicians, software developers, data scientists, and technical specialists — in building the immigration cases that establish permanent status without employer sponsorship.
BBA also serves employers across Texas — companies in manufacturing, construction, healthcare, and technology that need to protect their visa-dependent workforce through PERM labor certification, H-1B sponsorship, and Schedule A filings. From our Houston headquarters, BBA represents clients in Dallas, Midland, Austin, San Antonio, and throughout the state of Texas and beyond, as well as international applicants filing from Latin America, Europe, and the Middle East.
BBA Immigration is a bilingual practice offering services in English and Spanish. BBA's partners trained at major international law firms. They bring the rigor of global firms to every individual and employer engagement. Partners are involved in every file.
Immigration FAQs
Common Questions from STEM Professionals
Direct answers to the questions our clients ask most. No generic answers — specific guidance based on our experience across energy, healthcare, technology, and manufacturing.
Can I get a green card without employer sponsorship?
What is an EB-2 National Interest Waiver?
How can I qualify for an EB-1 Visa?
I'm on an H-1B approaching my sixth year. What are my options?
My previous NIW was denied. Can I refile?
Can I file from outside the United States?
How can I get an H-1B visa?
Achievements & Recognition




