President Trump's Mar-a-Lago. Charles Trainor Jr./Miami Herald/Tribune News Service via Getty Images) The RNC will hold part of its spring retreat at Mar-a-Lago, the Washington Post reports. Trump has clashed with some GOP leaders and committees in recent weeks. He sent a cease-and-desist letter to the RNC warning them not to use his likeness without approval. Visit the Business section of Insider for more stories. The Republican National Committee is now holding part of its spring retreat at Mar-a-Lago after former President Donald Trump sent the organization a cease-and-desist letter, the Washington Post reported on Monday.