Andy Mahon is an attorney in Barley Snyder’s Immigration and Employment practice groups with over a decade of experience. He concentrates his practice on immigration law, representing businesses and families seeking immigration benefits as well as defending individuals placed in removal proceedings. 

Andy manages a complex caseload of immigration matters for the firm, counseling a diverse range of businesses across industries including healthcare, dental, engineering, architecture, construction, manufacturing, technology, nonprofit and higher education. He works closely with his clients to address their full range of immigration needs. Andy guides clients through issues related to the Form I-9 process, assisting with the evaluation of employees’ authorization to work and the implementation of self-audits to ensure clients develop and maintain sound HR policies to promote consistency and compliance. He conducts comprehensive evaluations of foreign nationals’ eligibility for both temporary and permanent immigration statuses, developing tailored immigration strategies and overseeing the exchange of information and progress among the legal team to ensure seamless execution of these plans. Additionally, Andy prepares and submits petitions and applications for a wide range of immigration statuses, including temporary statuses, such as E-2, H-1B, J, L-1, O-1, R-1, and TN, as well as permanent resident status through EB-1, EB-2, EB-3, and EB-4 classifications, navigating various paths such as PERM and National Interest Waivers (NIW). His business immigration practice also includes representing international medical graduates in applications for immigration status and securing 212(e) waivers through the Conrad 30 and HHS programs. 

Andy has represented hundreds of clients before various agencies that are responsible for administering U.S. immigration laws, including the 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, filing petitions for review and submitting oral arguments before the U.S. Court of Appeals for the Third Circuit, and preparing mandamus and habeas petitions before the U.S. District Court for the Middle District of Pennsylvania. He routinely advises attorneys from other areas of practice on immigration matters affecting their clients, often working with criminal defense counsel to structure guilty pleas to avoid future immigration consequences. Additionally, Andy has presented on immigration topics at several training courses for lawyers, paralegals and community members.

Before joining Barley Snyder, Andy worked at a Lancaster law firm focused exclusively on the practice of immigration law, becoming a partner in 2019. Prior to that, he was a staff attorney for the Pennsylvania Immigration Resource Center where he defended individuals in removal proceedings who were most in need due to mental illness, poverty or persecution in their country of origin. He started his legal career as a law clerk for the Honorable Penny L. Blackwell in the York County Court of Common Pleas. 

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