A decade before Michigan Democratic Senate nominee Abdul El-Sayed appeared to question how JD Vance’s grandfather would have regarded Usha Vance, the vice president wrote that one of his "great regrets" was that his grandparents never got to meet his wife."Last, but certainly not least, is my darling wife, Usha," Vance wrote in 2016 in the acknowledgments of his memoir "Hillbilly Elegy." He added, "… though it is one of the great regrets of my life that Mamaw and Papaw never met her, it is the source of my greatest joy that I did."The passage was cited repeatedly on social media over the weeke...