Grayson Yeargin concentrates his practice on assisting clients with compliance with government requirements and guiding them through government investigations. He represents government contractors, companies in the private sphere, and individuals involved in disputes with the government.

A significant portion of Grayson's practice involves representing and advising clients concerning economic sanctions and export controls. He has extensive experience in assisting companies with compliance with the sanctions and embargoes administered by the Office of Foreign Assets Controls (OFAC), the International Traffic in Arms Regulations (ITAR), the Export Administration Regulations (EAR), and anti-boycott laws. He also assists clients with other aspects of international compliance, including issues involving the Foreign Corrupt Practices Act (FCPA), the Foreign Agents Registration Act (FARA), deals involving the Committee on Foreign Investment in the United States (CFIUS), and determinations concerning Foreign Ownership, Control, and Influence (FOCI).

Grayson also provides regulatory and dispute resolution advice to companies concerning government contracts issues. He assists clients with False Claims Act (FCA) matters (including qui tam litigation), laws governing false statements and fraud, inquiries into bidding practices and contract negotiation, suspension and debarment issues, compliance counseling, disclosures, and litigation with the federal government. He also advises national security and defense companies on the legal and regulatory compliance requirements that arise in those industries, with a particular focus on information security.

Grayson's practice includes enforcement and compliance elements. He assists clients in conducting internal investigation, assessing disclosure issues, working with government agencies to resolve disputes, and defending matters in litigation. He also helps clients develop compliance programs, institute corrective actions when problems arise, and work through regulatory issues.