DescriptionTrump's decision to take his wife AND his daughter on his first big trip fuels rumours of a rivalry.Theirs is the White House rivalry that dares not speak its name, but which, this week, was rather too glaring to ignore. Donald Trump went on his first international trip as President and took with him his wife Melania, and his daughter Ivanka, Normally, there is no confusion on the identity of America's First Lady it's the President's wife. Nowadays, however, it's not so clear. For Ivanka Trump the President's daughter by his first marriage, to Czech model Ivana has taken an increasingly prominent White House role alongside her husband, Jared Kushner, now reportedly Mr Trump's closest adviser. With the fragrant, ever-smiling Ivanka turning up at State dinners, world leader receptions and top-level government meetings, her stepmother Melania has remained in New York with her young son Barron. Melania has been far more out of the spotlight than Ivanka of late.