Vance will be the first VP to have a child while in office since the 1870s

Vice President JD Vance and second lady Usha Vance are expecting their fourth child this summer.

The big picture: It's the first time in modern U.S. history that a vice president has welcomed a child while in office.

The last vice president to have a child while in office was Schuyler Colfax, who served under President Ulysses S. Grant. Colfax and his wife, Ellen, had a son, Schuyler Colfax III, in April 1870.