Hale has participated in over 250 tax cases before the Tax Court, Courts of Appeals, District Courts, and various State Tax Tribunals. In addition to resolving issues through tax litigation, Hale has obtained dozens of favorable Private Letter Rulings for clients from the IRS National Office on procedural, tax, and international issues.

Hale holds five college degrees. At the University of Kansas, he earned a B.S., with distinction, M.A., with honors, and J.D. He later received an LL.M. degree in international law, with highest distinction, from the Universidad de Chile in South America. Finally, he obtained an LL.M. degree in tax from the University of Florida, where he was a graduate tax scholar.

During his studies, Hale received several awards for academic excellence, including the prestigious Harry S. Truman Foundation Scholarship, Janice Dawson Quinn Tax Scholarship, Tinker Foundation Scholarship, and Senator James B. Pearson International Fellowship. Hale also served as a graduate editor of the Florida Tax Review and member of the Kansas Journal of Law & Public Policy. Hale has been recognized as a leader in tax litigation for many years by Chambers USA and other respected organizations. He has also been inducted into the American College of Tax Counsel.

Hale ranks among the most active tax writers in the country. He has published over 260 articles in some of the nation's top tax journals, including Journal of Taxation, International Tax Journal, The Tax Adviser, Journal of International Taxation, Journal of Tax Practice and Procedure, Taxes Magazine, Practical Tax Lawyer, Journal of Pass-Through Entities, Tax Management International Journal, Journal of Multi-State Tax & Incentives, Tax Notes International, Taxation of Exempts, Practical Tax Strategies, Estate Planning, Corporate Business Taxation, and Journal of Real Estate Taxation. He has also published major articles in more than 20 university law reviews, both in the United States and abroad.

Hale has held leadership positions in many professional and civic organizations, including: (i) Journal of Taxation, former Editorial Board Member and tax columnist, (ii) IRS-Practitioner Liaison Committee, state bar representative, (iii) Journal of Tax Practice & Procedure, Editorial Board Member, (iv) Georgia Bar Tax Section, former President, (v) Georgia Bar Journal, former Editorial Board Member, (vi) GSU Low-Income Taxpayer Clinic, Advisory Committee Member, and (vii) Atlanta Bar Tax Section Board Member.