Soon after, in 2008, the United Nations launched an ambitious renovation project without the aid of America’s future president. On Tuesday, Mr. Trump used that experience to illustrate Turtle Bay’s failure to live up to potential. Back then, Mr. Trump warmly greeted this Sun reporter to his namesake skyscraper, widening the conversation far beyond the subject at hand. Mr. Trump was itching to take up the renovation of the UN’s aging, crumbling, asbestos-riddled landmark at Manhattan’s Turtle Bay district. For decades, the UN brass cited their status as an extraterritorial entity to reject visits by New York City building inspectors.