While serving as a White House counsel, he assisted President Ford in his historic testimony before the House Judiciary Committee on the Nixon pardon and also managed the nomination of John Paul Stevens to the Supreme Court.

He represented an officer of the American Petroleum Institute in federal litigation that resulted in a ruling effectively barring all federal Inspectors General from issuing subpoenas to compel testimony by non-governmental witnesses. See U.S. v. Iannone, 610 F.2d 943 (D.C. Cir. 1979).

He represented a major participant in the so-called “Iran-Contra Affair” in both Congressional and criminal investigations. See In Re North (Gadd Fee Application), 12 F.3d 252 (D.C.Cir.1994).

A substantial portion of his practice is devoted to litigation involving the economic interests of physicians and physician-owned hospitals. For many years, he represented the American Medical Association relevant to proposed amendments to the Federal Rules of Civil Procedure and the Federal Rules of Evidence, in accordance with the Rules Enabling Act..

He has represented major corporations incident to trade disputes arising under international treaties and executive agreements and in regulatory initiatives conducted by the Geneva-based World Health Organization (WHO).

He represented the Plaintiff from the trial court to the Supreme Court of the U.S. in CIC Services, LLC v. Internal Revenue Service 593 U.S. ___, 141 S.Ct. 1582 (2021). Suit to enjoin the IRS from enforcing a regulation for failure to observe the notice-and-comment requirement of the Administrative Procedure Act (APA) was not barred by the Anti-Injunction Act (AIA).

He represents business entities relevant to the utilization of off-shore captive insurance companies. He also manages MiniCapNews, an affordable, one-stop website for mini-captive insurance litigants.