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"From the cotton fields to the courthouse, to the Capitol, Leibowitz Never Quits.” This slogan embodies the energy and hard work Attorney Leibowitz puts into representing his clients. David Leibowitz was born in Mercedes, Texas and grew up in Pharr, Texas in the Rio Grande Valley of South Texas. He is one of 12 children, and as he puts it, he is “8th from the top, 5th from the bottom and 2nd in the second half-dozen.” After graduating from Phar-San Juan-Alamo High School in 1975, he married his high school sweetheart Delia Gutierrez and they went on to have three children, Jeremiah, Jessica, and Jacob. 
From the Rio Grande Valley, he attended The University of Notre Dame, where he earned a Bachelor of Business Administration in Accountancy in 1979. He had a major concentration in Spanish as well. He spent his sophomore year at Notre Dame studying in Mexico City at the Universidad Anahuac. He made the Dean's List 6 out of the 8 semesters while at Notre Dame. After Notre Dame, David returned to Texas and earned his law degree at St. Mary’s University School of Law. He was admitted to the Texas Bar in 1982. After law school, Attorney Leibowitz worked for Phil Hardberger, former Chief Justice of the 4th Court of Appeals and former Mayor of San Antonio. In October 1984, with his wife’s help, he started his own law firm.

In 2004, with a desire to help a greater number of Texans, Attorney Leibowitz entered politics and was elected to the Texas House of Representatives from Texas’ 117th District. He served in that position until 2010. During his time in office, he embodied his slogan “Leibowitz Never Quits” and authored, or joint-authored, 229 bills aimed at bettering the lives of all Texans. Some of those bills include HB 19 which required that pharmacists place an expiration date on each prescription bottle label indicating when medication should be discarded due to loss of potency or ineffectiveness of treatment; HB 22 which requires sex offenders to register all email addresses, screen names or any other form of internet identification; and HB 23 which requires landlords to disclose to prospective tenants whether or not the property being leased has ever been used to manufacture methamphetamine and if so what the landlord has done to remove the hazardous materials from the property.
Attorney Leibowitz is a member of the San Antonio and American Bar Associations, State Bar of Texas, San Antonio Trial Lawyers Association, Texas Trial Lawyers Association, and the National Association for Justice. He is admitted to practice law in all state courts in the State of Texas and in the District Court for the Western District of Texas. He is also fluent in Spanish.