When President  Donald Trump announced the  planning of a UFC event on the White House grounds for next year’s U.S. Independence Day, some of the biggest names in the sport began lobbying to be on the historic fight card.  Former two-division UFC champion and widely considered the greatest mixed martial artists of all time  Jon Jones ended a  two-week retirement after hearing the news of a White House UFC event. While Jones may be considered the G.O.A.T., former two-division champion  Conor McGregor is the king of pay-per-views