The Latin American Corporate Counsel Association (LACCA) has recognized Haynes Boone Partners Edgar Klee, Patricia Mastropierro and George Y. Gonzalez in its “LACCA Approved” directory for Tax, Aviation and Energy, respectively.
The list is comprised of Latin America’s top private practitioners as voted for by the region’s leading corporate counsel.
Learn more about the three ranked attorneys below:
Klee is a partner in the Tax Practice Group in the Mexico City office. He focuses on offering sophisticated corporate tax advice on international taxation, tax counseling for individuals, legal structuring, customs and foreign trade, and general tax litigation.
Mastropierro is the Mexico City office managing partner and practices in the International Practice Group, where she brings more than 25 years of experience advising clients on complex international transactions, aviation and regulatory matters. She has developed deep experience in guiding major U.S. and foreign airlines through the legal and operational challenges of expanding and maintaining global operations, as well as in multijurisdictional M&A projects and complex transactions in Latin America.
Gonzalez is a trusted advisor to clients in the energy, oil and gas, midstream, upstream, downstream, power, renewables, water, food and beverage, construction, infrastructure, real estate, healthcare and technology industries. A partner in the Energy, Mergers and Acquisitions and International Practice Groups in the Houston office, he counsels U.S. and international businesses in general corporate law with an emphasis on mergers and acquisitions, joint ventures, corporate control matters, securities, privately held companies and international legal issues.
These rankings follow others from Chambers Latin America and Latinvex recognizing Haynes Boone earlier this year. Patricia Mastropierro was recently included in the Latinvex Top 100 Female Lawyers of 2025, and Haynes Boone was ranked in Chambers Latin America 2026, Latinvex’s Top International Firms in 2025 and in the Latin Lawyer 250 2025 directory.
Haynes Boone is one of the most active U.S. law firms operating in Mexico with a growing list of both international and Mexican clients. Operating in Mexico City with its affiliate, Haynes Boone, SC, it is among the largest U.S. firms in Mexico and has been serving clients in both Mexico and the U.S. for over 30 years.
