Joe Biden asserted that he never heard worries that his son Hunter Biden's role on a Ukrainian gas company could create a conflict of interest. "Nobody warned me about a potential conflict of interest," Biden said Friday in an interview with NPR. "I never, never heard that once at all." Hunter Biden was on the board of Burisma, a Ukrainian gas company, while his father was vice president and working on Ukrainian policy. President Trump asked the Ukrainian president this year to investigate the Bidens, prompting Democrats to launch impeachment proceedings against Trump. George Kent, a top State Department official,...