Rapper Nicki Minaj joined President Trump in Michigan for a rally on Sunday, decked out in head-to-toe Gucci — as one of Trump’s top aides joked she could fill a very high-profile vacancy in the White House. The “Super Bass” hitmaker was spotted walking alongside Trump as they stepped off Air Force One at Selfridge Air National Guard Base, marking another high-profile appearance alongside the president. White House Communications Director Steven Cheung, who is known for trolling people on social media, shared a video of Minaj arriving with Trump and playfully suggesting she could be headed to the briefing room....