In addition to the Treasurer's traditional duties of overseeing the U.S. Mint and the Bureau of Engraving and Printing, Marin's tenure included organizing the Department’s first financial education outreach efforts. She also served as a member of the new Partnership for Prosperity efforts between the United States and Mexico. Marin was particularly concerned with educating young people on the importance of building and maintaining financial stability. She also served as a designee to the President's Advisory Commission on Educational Excellence for Hispanic Americans on behalf of Treasury Secretary John W. Snow.