Alexander “AJ” Merton is Co-Managing Partner of Quinn Emanuel’s Washington, D.C. office. He is a seasoned trial lawyer and trusted advisor to companies, boards, senior executives, and senior government officials navigating congressional and government investigations, crisis management, tax controversies, and complex commercial litigation. His work frequently involves matters where criminal, civil, regulatory, and reputational exposure collide—and he is as effective in a courtroom as he is in the hearing rooms of Capitol Hill or marshaling clients through investigations by DOJ, the IRS, an inspector general’s office, or a congressional committee.
AJ maintains a robust and formidable congressional investigations practice. He has served as counsel to cabinet and sub-cabinet nominees in Senate confirmation hearings; represented and advised senior government officials facing congressional oversight inquiries; served as lead counsel in a bicameral antitrust investigation by the Senate and House committees on antitrust, with parallel investigations by the Department of Justice and the Department of Education; advised a major research university president in connection with high-profile congressional hearings; and represented multiple companies in matters before various Senate and House committees and subcommittees, including investigations involving antitrust, greenwashing, and national security-related claims. He brings to each of these engagements a practitioner’s understanding of how to manage testimony, document production, and public positioning across proceedings that move on different timelines, answer to different institutional interests, and carry distinct legal and reputational consequences.
Beyond Capitol Hill, AJ’s matters have included parallel criminal and civil enforcement proceedings; domestic and cross-border government investigations; multi-billion dollar tax disputes against the IRS and DOJ; ESG, climate change, and greenwashing litigation; trade secret cases; and complex commercial disputes involving RICO allegations, breaches of fiduciary duty, and fraud. He is a seasoned advocate for companies and individuals navigating simultaneous exposure across multiple enforcement bodies and jurisdictions.
AJ has been recognized by Lawdragon as a Global Leader in Crisis Management (2025, 2026), twice named The American Lawyer’s “Litigator of the Week” (2021, 2024), selected for Bloomberg Law’s “They’ve Got Next: The 40 Under 40” in White Collar, Government Investigations & Tax (2022), and ranked in The Best Lawyers in America: Ones to Watch for Litigation and Controversy—Tax (2023–2025). Prior to joining the firm, AJ was a trial attorney for the U.S. Department of Justice, Tax Division, where he began through the Attorney General’s Honors Program. While there, AJ was twice awarded the U.S. DOJ Tax Division’s Outstanding Attorney Award and represented the United States throughout multiple U.S. District and Bankruptcy Courts in tax controversy matters including aerospace asset and joint-venture valuation disputes, transferee liabilities, and government enforcement against attempts to evade or defeat federal taxes.
Before law school, AJ taught 7th through 12th grade argument and debate at a college preparatory school in San Jose, California.
- Ken Griffin / IRS Data-Leak Litigation. Counsel to Ken Griffin, the founder and CEO of Citadel, in litigation against the IRS arising from what has been reported as the largest known data theft in IRS history—a breach that exposed the confidential tax return information of thousands of American taxpayers, including some of the nation’s most prominent business leaders. After eighteen months of litigation, the matter resolved with the IRS issuing a rare public apology to Mr. Griffin and the thousands of affected taxpayers, and committing to substantial investments in data security to prevent future breaches. (Named The American Lawyer’s “Litigators of the Week,” 2024).
- Boeing 737-MAX Investigations. Counsel to current and former Boeing executives and engineers in connection with the U.S. DOJ, FAA, DOT, SEC, and Congressional investigations into the Boeing 737-MAX program.
- Congressional Subpoena Dispute. Counsel to Dr. Ralph de la Torre, the former CEO of Steward Health Care, in a high-profile confrontation with the U.S. Senate Committee on Health, Education, Labor, and Pensions involving a testimonial subpoena and related federal litigation raising significant Fifth Amendment questions.
- Climate Change Litigations. Counsel to various energy companies in defending against a coordinated campaign of lawsuits brought by state attorneys general and municipal governments that deploy novel state tort and consumer protection theories that seek to impose liability on energy producers for the lawful production and sale of fossil fuels. The litigation effort—which has drawn increasing congressional scrutiny into what critics have characterized as activist-driven lawfare targeting the American energy industry—spans multiple jurisdictions and has resulted in significant defense victories, including a dismissal with prejudice in South Carolina that the plaintiff declined to appeal.
- PPG Industries, Inc. Trade Secrets Dispute. Counsel to PPG Industries, Inc.—a leading U.S. based manufacturer of specialty glass, fiberglass, and synthetic transparencies that are used for civil and military aviation applications—in a trade secret case against a Chinese competitor in which the court found that the Chinese competitor engaged in “a long-running scheme to steal and cheat” from PPG, such that “PPG makes a persuasive case that it is well past time for Defendants to pay up.” This civil case paralleled a federal criminal trade secrets case brought by the U.S. Department of Justice in United States v. Rukavina. (Named The American Lawyer’s “Litigators of the Week,” 2021.)
- PrivatBank Cross-Border Litigation. Counsel to Joint Stock Company Commercial Bank PrivatBank—one of the largest commercial banks in Ukraine—in Delaware Court of Chancery litigation alleging that the bank’s former controlling shareholders orchestrated a massive scheme to misappropriate billions of dollars in loan proceeds and launder hundreds of millions through U.S. shell companies into commercial real estate and industrial assets across more than a dozen states. The matter has involved parallel proceedings across multiple countries.
- Tax Refund Litigation (Foreign Tax Credits). Counsel to an international insurance company successfully resolving a tax refund litigation against the IRS/DOJ regarding a potential $3 billion liability, including issues that involved the substance-over-form doctrine and whether the company was entitled to certain foreign tax credits that it claimed in various cross-border financing transactions.
- Tax Allocation Dispute (Section 338(h)(10) Dispute). Counsel to an international insurance company successfully resolving a private tax allocation dispute arising from a Section 338(h)(10) sale, the settlement resulted in a tax refund to the client of over $50 million, more than the client’s initial value of the claim.
- Tax Indemnity Disputes (Various Disputes, including Section 965 Liability). Counsel to a spun-off multinational public company involved in a tax indemnity agreement dispute with its former parent regarding the proper calculation and allocation of tax liabilities arising from: the Section 965 Transition Tax, Foreign Tax Credits, Research and Development Credits, and certain historical Transfer Pricing transactions.
- Odebrecht Multilateral Development Bank Matters. Counsel to the Odebrecht Group, the largest construction conglomerate in South America, in what the U.S. Department of Justice has described as “the largest-ever global foreign bribery resolution,” including unprecedented and favorable settlements with various multilateral development banks.
- “Lava Jato” Investigations. Counsel to a former CEO of a multinational corporation specializing in offshore & marine, property, and infrastructure/asset management that was involved in a cross-border investigation regarding potential bribery of Brazilian politicians and government officials in the Lava Jato investigation conducted by Brazilian, U.S., and Swiss law enforcement authorities.
- First Amendment / Defamation Matters. Counsel to a prominent celebrity and spouse involved in multiple highly-publicized defamation actions brought throughout the United States.
- Crisis Law & Strategy Group
- Investigations, Government Enforcement & White Collar Criminal Defense Practice
- Latin America Practice
- Entertainment & Media Litigation
- Environmental Litigation
- Environmental, Social and Governance ("ESG") Practice
- Sports Litigation
- Tax Disputes
- Transnational Litigation
- Accounting & Financial Reporting Litigation
- Cannabis Litigation
- Data Privacy & Security
- Brazil Practice
- University of Southern California
(J.D., 2011) - Loyola Marymount University
(B.A., magna cum laude, communications, 2005)
- The State Bar of California
- The District of Columbia Bar
- United States District Court:
- Central District of California
- The United States Tax Court
- United States Department of Justice:
- Trial Attorney, Tax Division, 2011-2015
- Lawdragon 500 Global Leaders in Crisis Management, 2025 and 2026
- The American Lawyer’s “Litigators of the Week,” 2024 (Ken Griffin / IRS matter)
- The American Lawyer’s “Litigators of the Week,” 2021 (PPG Industries traded secret matter)
- Ranked in The Best Lawyers in America: Ones to Watch for Litigation and Controversy - Tax, 2023-2025
- Recognized by 2022 Bloomberg Law’s, They’ve Got Next: The 40 Under 40 -- White Collar, Government Investigations & Tax
- U.S. Dept. of Justice, Tax Division, Outstanding Attorney Award, 2014
- U.S. Dept. of Justice, Tax Division, Outstanding Attorney Award, 2013
- The Creep of Legislation Targeting Private Corruption, The Guide to Corporate Compliance, Second Edition, Latin Lawyer, July 2021.
- Litigators of the Week: The Quinn Emanuel Duo Who Scored a $26.4M Trade Secret Win Against a Chinese Glass Company, The AmLaw Litigation Daily, Law.com, June 11, 2021.
- New “Beneficial Owner” Requirements Under the Corporate Transparency Act, Firm Memoranda, January 2021.
- What’s New—Key Updates to the DOJ and SEC’s FCPA Resource Guide, Firm Memoranda, July 2020.
- Taxing Times – A COVID-19 Tax Update as of April 7, 2020, Firm Memoranda, April 2020.
- Lessons From Historical Crises: Compliance Pitfalls To Avoid During The Coronavirus, Firm Memoranda, March 2020.
- Expatriation Tax Next On IRS Crypto Enforcement List, Law360. Portfolio Media Inc. (October 28, 2019).
- Employee Rights 2019 United States, Global Investigation Review, May 2019.
- Employee Rights 2018 United States, Global Investigation Review, May 2018.
- Member, American Bar Association
- Member, Board of Governors, Irvine Valley College Foundation