Cooper gets things done. When former First Lady Hillary Clinton became U.S. Sen. Hillary Clinton (D-NY), it was Cooper who represented her interests on Long Island. When the business leaders of LI wanted to establish Accelerate Long Island as an organizational hub to harness the collective potential of the Island’s technology companies, it was Cooper who was tapped to pull it together. And while she is unquestionably one of the Island’s top business consultants with connections that range from the East End to the White House, she maintains a low profile—preferring to put her clients’ interests ahead of her own public image. This might not make Cooper a household name any time soon, but there’s a good chance her number is on the speed dial of most Power List Hall of Famers. And since her former boss is the odds-on favorite to be the next POTUS, even some of them might have trouble getting through soon.