Guillermo is a Texas native from the small rural town of Uvalde. He is a graduate of McMurry University and St. Mary’s University School of Law. During law school, Guillermo interned as a law clerk with the Equal Justice Center in San Antonio helping clients recover unpaid wages, regardless of immigration status. He also interned for the United States District Court in San Antonio and the Texas Fourth Court of Appeals. Guillermo is the author of an article regarding the discoverability of immigration-related facts in civil litigation, which is published in The Scholar: St. Mary’s Law Review on Race and Social Justice.

Prior to joining Viduarri, Lyde, Rodriguez & Haynes, L.L.P., Guillermo worked as an immigration attorney for the Refugee and Immigrant Center for Education and Legal Services (RAICES) in the San Antonio office. Guillermo began his legal career as an associate attorney for a private law firm in San Antonio practicing civil litigation and real estate litigation. Guillermo is based out of the San Antonio office and focuses his practice on representing individuals and businesses in U.S. Immigration and Nationality law cases. 

Guillermo currently serves as the EOIR Immigration Court liaison, the San Antonio Advocacy Liaison,, and on the donations committee with the American Immigration Lawyers Association and on the executive board of the San Antonio Bar Association Immigration and Nationality Law Section. Additionally, he is an active pro bono attorney with Catholic Charities, RAICES, and American Gateways. He and his wife, Erica, are parishioners at St. Luke Catholic Church and are active volunteers in parish ministry.

Education

J.D., St. Mary’s University School of Law, 2011
B.A., McMurry University, 2007

Professional Licenses

Supreme Court of Texas, 2011
U.S. District Court, Western District of Texas, 2012

Professional Associations and Memberships

• State Bar of Texas, Immigration and Nationality Law Section
• San Antonio Bar Association, Immigration and Nationality Law Section,  (president 2020-2021)
• American Immigration Lawyers Association, Texas Chapter, San Antonio advocacy liaison, San Antonio and Pearsall Immigration Court liaison, donations committee (member), National Day of Advocacy (committee member)
• Mexican American Bar Association
• San Antonio Young Lawyers Association
• St. Mary’s School of Law Hispanic Law Alumni Association, Board of Directors (past)
• Texas Young Professionals Association
• San Antonio Young Professionals Association