 J.D.! J.D.! J.D.! J.D.! J.D.! The crowd at the RNC in Milwaukee erupted in applause when the announcement was officially made as Vance stood on the convention floor with his wife, Usha. Vance has been in the Senate less than two years. At 39 years old, he is half the age of the 78-year-old Trump. He is also a bestselling author, and his hit memoir, Hillbilly Elegy, was made into a major motion picture.