“I am thrilled to be back in Maryland where I look forward to reengaging with our employees and reconnecting with the Prince George’s County community,” said Johnson. There, she became the first Black woman to run a casino in the state’s premier gaming city, adding to her long list of firsts in the industry. Over the last year and a half, Johnson served as the President & COO of Borgata Hotel Casino & Spa, an MGM Resorts International destination in Atlantic City, NJ. Johnson previously led the Prince George’s County, Maryland-based resort and casino from December 2017 through May 2020. She will oversee the property’s day-to-day operations, provide strategic direction and focus on employee engagement and community relations. NATIONAL HARBOR, Md., (January 6, 2022) – MGM Resorts International has announced the reappointment of Melonie Johnson as President & Chief Operating Officer (COO) of MGM National Harbor.