The Managing Partner of Gordon & Rees , one of the largest law firms in the United States in which she focused on ensuring diversity and gender equality in developing the firm, making it one of the most diverse law firms in America.

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Prior to joining Gordon & Rees Merceedes was the Governor of New York appointed Mercedes an Administrative La Judge in the New York State Division of Human Rights. Forbes American Airlines named Mercedes one of the six most influential women in America. The list of dignitaries includes former U.S. Secretary of State Madeleine Albright. Notre Dame Law School presented Mercedes with the prestigious Gracciela Olivarez award for outstanding achievement as a leading Hispanic lawyer of the highest ethical and moral standards . United States Supreme Court Justice Sonia Sotomayor previously received the award. MultiCultural Law Magazine profiled Mercedes in a Leadership Interview titled Reaching Back to Diversify the Legal Orofessional.She also regularly appears on television as a legal analyst.