Company lists · Data refreshed September 2026
Top 25 I-140 petition law firms worldwide
RevenueBase identified 1,518 i-140 petition law firms worldwide as of September 2026 and tracks 13,848 professional contacts across them, including 5,747 with verified work emails. The United States is the largest market and New York the largest hub.
This list covers i-140 petition law firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026. Country and city lists for i-140 petition law firms follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest i-140 petition law firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,130 contacts → | ||||
Partial evidence “BAL is a corporate immigration law firm that powers human achievement through immigration expertise, people-centered client services and innovative technology.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 814 contacts → | ||||
Partial evidence “We are one of the nation’s most experienced law firms dedicated to delivering strategic immigration solutions-especially in complex and high-stakes cases-so our clients can move…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 658 contacts → | ||||
Partial evidence “Alonso & Alonso is a distinguished immigration law firm with a rich history of providing expert legal services in navigating the complexities of the U.S.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 377 contacts → | ||||
Indirect evidence “At Colombo & Hurd, we help professionals, founders, and investors build their future in the United States.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 235 contacts → | ||||
Partial evidence “Ellis Porter is a law firm focused on managing the immigration experience for employers and individuals.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 232 contacts → | ||||
Partial evidence “Eastern Washington law firm devoted to helping and protecting immigrants.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 206 contacts → | ||||
Indirect evidence “With offices in Toronto (Canada), Philadelphia (Pennsylvania), Providence (Rhode Island), Vail (Colorado), Orlando (Florida), Cleveland (Ohio) and Boston (Massachusetts).” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 182 contacts → | ||||
Partial evidence “Manuel Solis Law Firm focuses on helping immigrants become U.S.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 139 contacts → | ||||
Partial evidence “Foster is a leading global immigration law firm dedicated to helping employers and individuals obtain nonimmigrant and immigrant work visas and permanent resident options…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 127 contacts → | ||||
Partial evidence “At Murray Osorio PLLC, our mission as a national full-service immigration law firm is to provide superior legal services across the breadth of immigration law throughout the…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 121 contacts → | ||||
Partial evidence “Klasko Immigration Law Partners, LLP is nationally renowned for providing creative solutions to many of the most complex issues in immigration law to multinational corporations…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 99 contacts → | ||||
Indirect evidence “Fakhoury Global Immigration (FGI) specializes in U.S.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 88 contacts → | ||||
Partial evidence “Manifest Law is a modern immigration law firm with handpicked attorneys powered by cutting-edge software.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 75 contacts → | ||||
Indirect evidence “Our mission Is to help 1 million life’s live free -“Vive Libre”.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 72 contacts → | ||||
Partial evidence “T&S is a boutique business immigration law firm with offices in San Francisco, Los Angeles, London, and Singapore dedicated to helping global businesses onboard the foreign…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 72 contacts → | ||||
Partial evidence “Consumer Law Group, LLC is a national immigration law firm focused exclusively on U.S.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 68 contacts → | ||||
Partial evidence “Founded in 1994, the Murthy Law Firm practices U.S.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 65 contacts → | ||||
Partial evidence “Wilner & O'Reilly, APLC was formed in 2003, bringing together two top-rated attorneys recognized for their knowledge and ability in the field of immigration law to create one of…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 62 contacts → | ||||
Partial evidence “At Immigration Law Group, we specialize in providing comprehensive business immigration legal services to high-volume corporate clients, start-up ventures, small businesses, and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 61 contacts → | ||||
Partial evidence “Bay Immigration law is a full service immigration law firm.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 59 contacts → | ||||
Partial evidence “Eagan Immigration PLLC is a full-service immigration law firm.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 55 contacts → | ||||
Partial evidence “Maggio Kattar has been recognized as one of the top Immigration Law firms in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 54 contacts → | ||||
Partial evidence “With over 20 years of experience and a passion for immigration law, Chris Musillo and Cindy Unkenholt founded Musillo Unkenholt Immigration Law in 2009.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 52 contacts → | ||||
Indirect evidence “60+ Multilingual professionals helping global clients secure their future in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 50 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: i-140 petition law firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names i-140 petition law firms.
- Partial evidence
- Its own public description names part of i-140 petition law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name i-140 petition law firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
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I-140 petition law firms worldwide at a glance
As of Sep 28, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among i-140 petition law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for i-140 petition law firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “i-140 petition law firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names i-140 petition law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among i-140 petition law firms, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 5,747 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
I-140 petition law firms by location
9 lists · largest firstEvery I-140 petition law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Cities
- I-140 petition law firms based in New York, United States107
- I-140 petition law firms based in Miami, United States48
- I-140 petition law firms based in Houston, United States40
- I-140 petition law firms based in Los Angeles, United States40
- I-140 petition law firms based in San Francisco, United States33
- I-140 petition law firms based in Chicago, United States30
- I-140 petition law firms based in Atlanta, United States25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names i-140 petition law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many i-140 petition law firms are there worldwide?
RevenueBase identified 1,518 i-140 petition law firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
BAL, headquartered in Richardson, tops this list with the largest team on record.
Which country has the most i-140 petition law firms?
The United States leads with 1,227 companies, followed by Canada (28). Every i-140 petition law firms list by country and city is linked on this page.
Which city has the most i-140 petition law firms?
New York leads with 107 headquartered companies, followed by Miami (48) and Houston (40).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,747 verified decision-maker contacts tracked across these 1,518 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.