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About me

I have considerable professional experience as a lawyer and expertise in immigration law. I am often interviewed by Channel 9, KGUN TV as an immigration expert, and a handful of these appear  under the publications section of this profile.


I participate in professional organizations. I represent the Amercan Bar Association (ABA) as its liasion to USCIS for the development of the next generation e-filing system for immigration benefits. I represent the American Immigration Lawyers Association Arizona Chapter as its liaison to USCIS to combat the unauthorized practice of law by untrained notarios who often destroy the lives of immigrants through incompetence and lack of training.


I have served on the governing body of the ABA Section of Science and Technology Law, was one of the founders and later Chairman of LegalXML, a technology body for law within the Organization for the Advancement of Structured Information Standards (OASIS), which is an international, not-for-profit consortium for technology standards. A more detailed listing of my professional activities and speaking engagements can be found at this Internet page:


I believe that Internet solutions can help improve the quality and lower the cost of delivery of legal services to the public. I have developed an Affidavit of Support Calculator(tm) to help applicants for permanent residency to quickly determine if their petitioner's income can qualify, which is available for free on my law firm's website:


I developed an Internet program to help analyze quickly the chances for obtaining deferred action by young immigrant children who were brought by their parents unlawfully to the United States, and made the beta version available for free to community organizations and legal aid services helping to complete paperwork to obtain DACA benefits.


I am married and have four grown children who are actively engaged in their own careers.


I get real satisfaction in having clients obtain their immigrant benefits.


Languages spoken: French, Spanish

Photos and videos

180484 1349372721

180484 1243897821

Practice areas


  1. Immigration: 100%
    38 years, 1 thousand cases



Hourly ($350-450/hour), Fixed (always)

Payment types:

Cash, Check, Credit card

Attorney endorsements

2 total 

Are you an attorney? Endorse this lawyer

  • Victoria J. Trull

    John Messing is a great attorney, not only because of his analytic skills but because of his dedication to his clients. I know this because I have had the opportunity to work with him on various cases. He takes the time to really think through every aspect of a client's case. His policy of giving each client the personal attention they deserve and treating them as he would like to be treated is the foundation upon which he bases a relationship with each client that comes through his door. He has served as a mentor to me but most importantly, he serves as an example of how honor and respect can still be found the legal profession.


    Victoria Trull Immigration Attorney
    Relationship: Worked for lawyer

  • No photo

    John is one of the best appellate lawyers and legal minds I have ever met. He is hard working, meticulous and tenacious. I admire his abilities and humanity. A true professional.


    Edward Laber
    Relationship: Fellow lawyer in community

Contact info

5151 E Broadway Blvd Ste 1600
Tucson, AZ, 85711


AZActive 197704/19/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Immigration Law Firm of the Year in ArizonaCorporate Intl Magazine2014
Server-based encrypted messaging method No. 7,702,107U.S. Patent Office2010
Electronic signature method Patent No 7,039,805U.S. Patent Office2006
Electronic certificate signature program No. 6,745,327U.S. Patent Office2004
Who's Who in American LawMarquis Who's Who in American Law1992
French Government FellowFrench Government1972
Special AwardStanford Law School1967
Fulbright ScholarFulbright Commission1967
Law ReviewStanford Law School1966
Magna cum laudePrinceton University1964
Work experience
TitleCompany nameDuration
AttorneyMessing Law Offices, P.L.C.1978 - Present
AssociateFenwick Stone Davis & West1974 - 1976
Associate Professor of LawHaile Sellasie I University, Ethiopia1969 - 1971
International associate and negotiatorCommunications Satellite Corporation1968 - 1969
Association namePosition nameDuration
American Bar Association, Science and Technology Law SectionLiasion to USCIS2010 - Present
American Immigration Lawyers AssociationMember2007 - Present
American Bar AssociationMember2001 - Present
Pima County Bar AssociationMember1978 - Present
State Bar of ArizonaMember1978 - Present
State Bar of CaliforniaMember1967 - Present
American Immigration Lawyers Association (Arizona chapter)Liaison, USCIS for Unauthorized Law Practice2012 - 2013
LegalXML-OasisMember2006 - 2010
LegalXML-OasisPast Chair2004 - 2006
American Bar Association, Science and Technology Law SectionExecutive Council2001 - 2005
American Bar Association, Science and Technology Law, Electronic Filing CommitteePast Chair2001 - 2005
LegalXMLCo-Founder1999 - 2000
Legal cases
Case nameOutcome
In re RDeportation charges dismissed; client subsequently naturalized and became a citizen.
Matter of CAppeal terminated in favor of client and client subsequently naturalized and obtained citizenship.
Matter of LAsylum granted
See all legal cases 
Publication nameTitleDate
immcriminationArizona immigration law - new 9th circuit limitation?2012
immcriminationNew “Mini” Categorical Analysis for Deferred Action2012
immcriminationDREAMERs BEWARE!2012
immcriminationCategorical and modified categorical approaches to enhanced federal sentences and immigration consequences of crimes2012
immcriminationConstitutional right to a plea bargain2012
immcriminationCategorical and Modified Categorical Analysis: Introduction2012
KGUN 9 TV 9OYSIs Arizona headed for another legal showdown?2012
KGUN TV 9OYSDeportations not stopping for illegal immigrants who are not DREAMers2012
KGUN TV 9OYSBorder Patrol Blunder: One-way flights home for illegal crossers will continue2012
KGUN TV 9OYSIllegal immigrants rush to apply for deferred deportation2012
KGUN TV 9OYSAs federal immigration shift nears, one question on a form could be a deal breaker2012
KGUN TV 9OYSFriends of undocumented immigrant: Federal policy change helped free him2012
KGUN TV 9OYSHigh court ruling on SB 1070: Whose victory?2012
ArizonaCentral.comHow would immigration scenarios play out?2010
Lohrman Education ServicesComing Changes in Employment Verification Procedures2007
Coming Changes in Employment Verification ProceduresHRResource.com2007
American Bar Association, SciTech LawyerTwo Methods of Electronic Service of Process2006
JurimetricsElectronic Filing in the Pima County Small Claims Court--Technical Parameters, Adopted Solutions, and some of the Legal Issues Involved1998
Pacific Historical ReviewPublic Lands, Politics and Progressives: The Oregon Land Fraud Trials 1903-101996
Stanford Law ReviewAmerican Actions in Vietnam: Justifiable in International Law?1967
Stanford Law ReviewCost Depletion of Groundwater1966
School nameMajorDegreeGraduated
Stanford Law SchoolLawJD - Juris Doctor1967
Princeton UniversityN/AUndergraduate1964
Speaking engagements
Conference nameTitleDate
PodcastThe Trend Toward Electronic Filing with Government Agencies2014
CLEDipping a Toe into Immigration Practice, even before Reform2014
Property Records Industry Association (PRIA)Annual conferenceURPERA security requirements (Section 5(b)(5)2007
Maricopa County ICJIS Technologies sessionIntroduction to Implementing XML web services authentication2006
National Center for State Courts e-Courts 2004 Conference Plenary SessionPreventing A Pandemic of Judicial Identity Theft2004
National Association of Professional Process Servers (NAPPS) Annual ConferenceElectronic Service of Process2004