Chelsea Clinton, second from right, leaves Manhattan's Lenox Hill hospital with her newborn baby, Charlotte, husband Marc Mezvinsky, left, mother Hillary Clinton, partly visible, second from left, and father Bill Clinton, in New York, Monday, Sept. 29, 2014. Charlotte was born Friday, Sept. 26, 2014. (AP Photo/William Regan)

Hillary Clinton, partially visible left, her husband Bill Clinton, far right, their daughter Chelsea Clinton, center, her newborn baby, Charlotte, and Chelsea's husband Marc Mezvinsky leave Manhattan's Lenox Hill hospital in New York, Monday, Sept. 29, 2014. Charlotte was born Friday, Sept. 26, 2014. (AP Photo/William Regan)

Chelsea Clinton and her husband Marc Mezvinsky smile for photographers while leaving Manhattan's Lenox Hill hospital with the couple's newborn baby, Charlotte, Monday, Sept. 29, 2014 in New York. (AP Photo/William Regan)