When musical acts pulled out of a concert series marking America's 250th anniversary, fearing it might be too closely tied to Donald Trump, the president decided to formally make himself the headlining act. The announcement put to rest any possible scenario that a president who has built his personal and political persona on seizing the spotlight might cede the stage to avoid overshadowing a national celebration bigger than himself. It also offered a peek into how Trump may handle hosting duties for the upcoming World Cup. The president has long relished hosting events, from his reality show days to emceeing social occasions and renovating the White House.