UFC CEO  Dana White has promised next year’s UFC event at the White House will be the ‘greatest card’ the fight promotion has ever put on.  UFC matchmakers have the pick off the litter when it comes to who’ll compete at the historic event, but for it to be billed as the ‘greatest,’ it would have to feature the company’s bigger star.  Former two-division UFC champion  Conor McGregor says it’s a ‘done deal’ that he’ll be fighting at the White House.