Company lists · Data refreshed September 2026

Top 25 Employment immigration law firms based in the United States

Name: Employment immigration law firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 9,176 companies tracked

RevenueBase identified 9,176 employment immigration law firms headquartered in the United States as of September 2026 and tracks 119,825 professional contacts across them, including 61,447 with verified work emails. New York is the largest hub.

This list covers employment immigration law firms headquartered in the United States, 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.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

9,176Companies

119,825Contacts tracked

61,447Verified emails

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The 25 largest employment immigration law firms based in the United States

Ranked by team size

Top 25 of 9,176 employment immigration law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to employment immigration law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Fragomen	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,245 contacts →
	Partial evidence “Fragomen is the leading global immigration services firm worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
2	Ogletree Deakins	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,708 contacts →
	Strong evidence “Ogletree Deakins is one of the largest labor and employment law firms representing management in all types of employment-related legal matters.” Source: RevenueBase Database · checked Sep 28, 2026
3	Littler	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,555 contacts →
	Strong evidence “Littler is the largest global employment and labor law practice, representing management in all aspects of employment and labor law and serving as a single-source solution…” Source: RevenueBase Database · checked Sep 28, 2026
4	Jackson Lewis P.C	Strong evidence	New York, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,285 contacts →
	Strong evidence “Focused on employment and labor law since 1958, Jackson Lewis P.C.’s attorneys located in major cities nationwide consistently identify and respond to new ways workplace law…” Source: RevenueBase Database · checked Sep 28, 2026
5	Seyfarth Shaw LLP	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,167 contacts →
	Indirect evidence “High stakes.” Source: RevenueBase Database · checked Sep 28, 2026
6	Nelson Mullins Riley & Scarborough	Partial evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,012 contacts →
	Partial evidence “Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.” Source: RevenueBase Database · checked Sep 28, 2026
7	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,790 contacts →
	Partial evidence “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Source: RevenueBase Database · checked Sep 28, 2026
8	Ballard Spahr LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,682 contacts →
	Partial evidence “Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Source: RevenueBase Database · checked Sep 28, 2026
9	Fisher Phillips	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	501-1,000	1,471 contacts →
	Indirect evidence “With hundreds of attorneys across the globe, Fisher Phillips advises and advocates for employers internationally on some of the most complex and high-profile workplace matters.” Source: RevenueBase Database · checked Sep 28, 2026
10	Clark Hill LAW	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,343 contacts →
	Indirect evidence “At Clark Hill, our value proposition is simple.” Source: RevenueBase Database · checked Sep 28, 2026
11	Quarles & Brady LLP	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,318 contacts →
	Indirect evidence “For over 125 years, Quarles & Brady LLP has provided quality legal services to a wide range of industries on a national stage.” Source: RevenueBase Database · checked Sep 28, 2026
12	BAL	Strong evidence	Richardson, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,130 contacts →
	Strong 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, 2026
13	Spencer Fane LLP	Partial evidence	Kansas City, MO, United StatesHQ checked Sep 28, 2026	501-1,000	1,041 contacts →
	Partial evidence “Spencer Fane is a law firm where your business leaders work with our business leaders.” Source: RevenueBase Database · checked Sep 28, 2026
14	Jackson Walker LLP	Partial evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	501-1,000	968 contacts →
	Partial evidence “Jackson Walker is a Texas-based law firm with a national presence and global reach.” Source: RevenueBase Database · checked Sep 28, 2026
15	Lisinski LAW Firm	Strong evidence	Dublin, OH, United StatesHQ checked Sep 28, 2026	1,001-5,000	814 contacts →
	Strong 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, 2026
16	Wood, Smith, Henning & Berman LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 2026	501-1,000	781 contacts →
	Indirect evidence “Wood, Smith, Henning & Berman offers world-class representation for clients ranging from individuals to Fortune 500 corporations, with an emphasis on small to middle market firms.” Source: RevenueBase Database · checked Sep 28, 2026
17	CIBT	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	768 contacts →
	Partial evidence “CIBT is the leading global provider of immigration and visa services for corporations and individuals with over 1,600 expert immigration and visa professionals, attorneys and…” Source: RevenueBase Database · checked Sep 28, 2026
18	Fordharrison LLP	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	201-500	746 contacts →
	Strong evidence “FordHarrison LLP - your partner in employment law.” Source: RevenueBase Database · checked Sep 28, 2026
19	Epstein Becker Green	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	701 contacts →
	Strong evidence “Clients turn to Epstein Becker Green for strategic counsel in employment and labor law, health care and life sciences, and complex litigation.” Source: RevenueBase Database · checked Sep 28, 2026
20	Kelley Drye & Warren LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	690 contacts →
	Partial evidence “Kelley Drye is an AmLaw 200 law firm of more than 350 lawyers and other professionals practicing in New York, NY; Washington, D.C; Chicago, IL; Houston, TX, Los Angeles, CA; San…” Source: RevenueBase Database · checked Sep 28, 2026
21	Butler Snow LLP	Indirect evidence	Ridgeland, MS, United StatesHQ checked Sep 28, 2026	501-1,000	685 contacts →
	Indirect evidence “With over 400 attorneys in offices in Albuquerque, Ambler (PA), Atlanta, Austin, Baton Rouge, Bethlehem (PA), Birmingham, Boston, Charleston, Dallas, Denver, Gulfport, Huntsville…” Source: RevenueBase Database · checked Sep 28, 2026
22	Alonso & Alonso Attorneys At Law, Pllc	Strong evidence	San Antonio, TX, United StatesHQ checked Sep 28, 2026	201-500	658 contacts →
	Strong 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, 2026
23	Shutts & Bowen LLP	Partial evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	501-1,000	613 contacts →
	Partial evidence “Shutts & Bowen is a Florida-based law firm, headquartered in Miami, representing individuals and business entities nationally and internationally.” Source: RevenueBase Database · checked Sep 28, 2026
24	Eckert Seamans	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 28, 2026	501-1,000	570 contacts →
	Indirect evidence “Eckert Seamans Cherin & Mellott LLC has lawyers in offices throughout the United States, including Harrisburg, Philadelphia, and Pittsburgh, Pennsylvania; Boston, Massachusetts…” Source: RevenueBase Database · checked Sep 28, 2026
25	Amundsen Davis, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	201-500	542 contacts →
	Partial evidence “Amundsen Davis is a law firm comprised of over 250 attorneys headquartered in Chicago.” Source: RevenueBase Database · checked Sep 28, 2026

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: employment immigration 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 employment immigration law firms.
Partial evidence: Its own public description names part of employment immigration law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name employment immigration 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.

Showing 25 of 9,176 employment immigration law firms based in the United States

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Employment immigration law firms based in the United States at a glance

As of Sep 28, 2026

51.3%Verified-email coverage

13.1Average contacts per company

1-10Median size (employees)

6.7%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

6,445

11-50

2,136

51-200

445

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 9,176 companies.

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 employment immigration 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “employment immigration 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 employment immigration 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 employment immigration law firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 61,447 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.

Employment immigration law firms by metro

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 employment immigration 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 employment immigration law firms are there based in the United States?

RevenueBase identified 9,176 employment immigration law firms headquartered in the United States 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?

Fragomen, headquartered in New York, tops this list with the largest team on record.

Which city has the most employment immigration law firms?

New York leads with 616 headquartered companies, followed by Los Angeles (330) and Houston (236).

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 61,447 verified decision-maker contacts tracked across these 9,176 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.