Susan Musser

Susan Musser

Senior Associate
Washington, D.C.

Email susan.musser@​

Phone +1 202 637 5457

Fax +1 202 637 5910

Practice groupGlobal Regulatory

Susan Musser guides clients through the complexities of a government investigation. Utilizing her vast experience as a criminal and civil litigator, she assists clients to develop innovative, effective, and efficient trial strategies to minimize civil, criminal, and international liability.

Since joining the firm, Susan has represented both international and domestic clients under investigation for alleged cartel conduct. In this role, she guides her clients through the procedure of responding to a service of process and conducting an internal investigation. She assists clients through every step of the process: assessing liability, advocating before the agency, determining risks and benefits of cooperation, and preparing for trial.

Susan also has a robust pro bono practice. She represents victims of domestic violence in obtaining protective orders. Representing a class of Washingtonians, Susan sued the District of Columbia for improperly allocating Supplemental Nutrition Assistance Program (SNAP) food stamp benefits. She obtained a preliminary injunction on her clients' behalf and continues to advocate for full and effective compliance with SNAP regulations.

Prior to joining Hogan Lovells, Susan clerked for Judge Wolff at the Missouri Supreme Court. Following that, she joined the Antitrust Division of the Department of Justice through the Honors program as a trial attorney. During her six years at the Antitrust Division, Susan tried both civil and criminal cases and led both international and domestic investigations into allegations of anticompetitive conduct. Most notably, Susan was a key member of the United States v. American Express and United States, et al., v. US Airways Group, Inc. et al. litigation teams and first-chaired the trial of a defendant charged with multiple counts of bid rigging and bank fraud.

Awards and recognitions


Assistant Attorney General Award: Real Estate Auction Foreclosure Cases
Department of Justice


Assistant Attorney General Award: American Express Litigation
Department of Justice


Assistant Attorney General Award: US Airways Litigation
Department of Justice


Antitrust: Cartel
Legal 500 US

Education and admissions


J.D., Saint Louis University, cum laude, 2010

B.A., Saint Louis University, summa cum laude, 2007

Bar admissions and qualifications

District of Columbia


Representative experience

Acted as first chair of trial alleging multiple counts of bid rigging and fraud.*

Acted as part of the trial team in the United States v. American Express case.*

Acted as part of the trial team in the United States, et al., v. US Airways Group, Inc. et al. case.*

Represented companies under investigation by the Department of Justice for cartel allegations.

Advised international corporations about their trial and litigation risks.

Acted as a trial attorney at the Department of Justice, leading both domestic and international cartel investigations.*

Prosecuted and tried cases across the country including cases in Alabama; Georgia; California; Washington, D.C.; and New York.*

Prepared company employees for Department of Justice interviews.

*Matter handled prior to joining Hogan Lovells.

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