WASHINGTON — Former first son Hunter Biden got help from the Obama administration — which his father, Joe, served as vice president — while repping Ukrainian energy company Burisma Holdings, which paid the younger Biden a million-dollar salary based on his political connections, bombshell federal files published Friday show. The documents — which emerged 73 days after Joe Biden’s presidency ended — show Hunter, now 55, solicited and received commitments of State Department assistance for a Burisma geothermal subsidiary’s work in Italy. Then-US Ambassador to Rome John Phillips, who had received a letter from Hunter asking for help, wrote to...