Biography

Josh advises clients on a variety of litigation and regulatory issues, including antitrust, arbitration, securities, and administrative law. He has secured appellate victories in several high-profile matters, including:*
- Department of Homeland Security v. Regents of University of California, 140 S. Ct. 1891 (2020) (rescission of DACA program);
- Opati v. Republic of Sudan, 140 S. Ct. 1601 (2020) (recovery of punitive damages for victims of terrorist attacks);
- Nasdaq Stock Market LLC v. SEC, 38 F.4th 1126 (D.C. Cir. 2022) (unlawful agency restructuring of securities exchange governance);
- Harper v. Amazon.com Services, Inc., 12 F.4th 287 (3d Cir. 2021) (enforcement of arbitration agreement);
- New Hampshire Lottery Commission v. Rosen, 986 F.3d 38 (1st Cir. 2021) (scope of liability under the federal Wire Act); and
- New York Stock Exchange v. SEC, 962 F.3d 541 (D.C. Cir. 2020) (unlawful agency “pilot” program).
In addition to preparing lead attorneys for argument, Josh has presented oral argument in the Fourth and Ninth Circuits.
Prior to joining Weil, Josh worked at another global law firm. He graduated summa cum laude from Cornell Law School, where he served as Editor-in-Chief of the Cornell Law Review. After law school, Josh served as a law clerk to the Honorable Barrington D. Parker, Jr. of the U.S. Court of Appeals for the Second Circuit and for the Honorable Kenneth Karas of the U.S. District Court for the Southern District of New York. He has been recognized by Best Lawyers: Ones to Watch in America for his work in administrative and regulatory law.
* includes matters handled prior to joining Weil
Awards and Recognition, Speaking Engagements, Guides and Resources, Latest Thinking, Firm News & Announcements
Awards and Recognition
- Josh Wesneski Named a "Best Lawyer: One to Watch” Honoree for Administrative / Regulatory Law Award Brief — The Best Lawyers in America
Latest Thinking
- Supreme Court Allows Tobacco Retailers to Petition for Review of FDA Marketing Request Denial Alert — By Mark A. Perry, Josh Wesneski, Claire Chapla and Joseph Nelson — PDF — June 20, 2025
- Supreme Court Holds that Fuel Producers Have Standing to Challenge EPA’s Approval of California Vehicle Emission Standards Alert — By Mark A. Perry, Josh Wesneski and Sebastian Laguna — PDF — June 20, 2025
- Supreme Court Holds that the Hobbs Act Does Not Bar District Courts from Considering Challenges to Agency Statutory Interpretations in Enforcement Proceedings Alert — By Josh Wesneski and Marina Masterson — PDF — June 20, 2025
- Lessons Learned from the U.S. Supreme Court’s Confirmation of Corporate Separateness Publication — By Jessica Lynn Falk, Josh Wesneski, Marina Masterson and Jenna Hann — PDF — June 10, 2025
- Supreme Court Clarifies Personal Jurisdiction Requirements in Suits Under the Foreign Sovereign Immunities Act Alert — By Josh Wesneski and Laurel L. Zigerelli — PDF — June 06, 2025
Firm News & Announcements
- Weil Lawyers Named to 2024 Capital Pro Bono Honor Roll Firm Announcement — May 08, 2025
- Weil Elects 18 New Partners and Announces New Counsel Class Firm Announcement — November 26, 2024