Andy Mahon is an attorney in Barley Snyder’s Immigration and Employment practice groups with more than a decade of experience helping businesses, families and individuals navigate complex immigration matters. He concentrates his practice exclusively on immigration law, representing clients seeking immigration benefits, counseling employers on workforce and compliance issues, and defending individuals in removal proceedings.

Andy manages a wide-ranging immigration caseload for employers across industries, including healthcare, dental, engineering, architecture, construction, manufacturing, technology, nonprofit, agriculture and higher education. He works closely with clients to evaluate foreign nationals’ eligibility for temporary and permanent immigration status, develop practical immigration strategies and guide matters through each stage of the process.

His business immigration work includes preparing and filing petitions and applications for temporary statuses such as E-2, H-1B, J-1, L-1, O-1, R-1 and TN, as well as permanent residence through EB-1, EB-2, EB-3 and EB-4 classifications, PERM labor certification and National Interest Waivers. Andy also represents international medical graduates in immigration matters, including 212(e) waiver applications through the Conrad 30 and HHS programs.

Andy also advises employers on Form I-9 compliance, employee work authorization issues and internal self-audits designed to promote consistent human resources practices and reduce compliance risk.

Andy has represented hundreds of clients before agencies that administer U.S. immigration laws, including U.S. Citizenship and Immigration Services, the U.S. Department of Justice and the U.S. Department of State. He also litigates immigration cases in federal court, including petitions for review and oral arguments before the U.S. Court of Appeals for the Third Circuit, as well as mandamus and habeas petitions before the U.S. District Court for the Middle District of Pennsylvania.

In addition, Andy serves as a resource to attorneys in other practice areas on immigration issues affecting their clients, including working with criminal defense counsel to identify immigration consequences and structure pleas where appropriate. He has also presented on immigration topics for lawyers, paralegals and community members.

Before joining Barley Snyder, Andy practiced at a Lancaster law firm focused exclusively on immigration law, where he became a partner in 2019. Earlier in his career, he served as a staff attorney with the Pennsylvania Immigration Resource Center, defending individuals in removal proceedings who faced significant barriers due to mental illness, poverty or persecution in their countries of origin. He began his legal career as a law clerk for the Honorable Penny L. Blackwell in the York County Court of Common Pleas.

Andy earned his bachelor’s degree in history and French from Fordham University before spending two years in France as an English teacher. He earned his juris doctor from Widener University School of Law, graduating with honors, and was a member of the Moot Court Honor Society and the Widener Law Journal.