FILE - Second lady Usha Vance arrives at a women's history month event in the East Room at the White House, March 12, 2026, in Washington. (AP Photo/Julia Demaree Nikhinson, File)By DARLENE SUPERVILLE Associated PressWASHINGTON (AP) — Vice President JD Vance and his wife, second lady Usha Vance, on Sunday announced the birth of their fourth child, the first born to a sitting vice president in more than 150 years. They thanked doctors and staff at the Walter Reed National Military Medical Center and with the White House medical team. Usha Vance, the daughter of immigrants from India, had already been the subject of some public fascination because of her husband. Usha Vance, a former attorney who once clerked for Supreme Court Chief Justice John Roberts, concurred — in part.