Sen. Tammy Duckworth's baby makes her big debut on the Senate floor.

Duckworth is the first sitting senator to give birth while in office, and the Senate unanimously passed a rule change to allow her to nurse her newborn on Senate floor. https://t.co/VeBjl9Jo1U pic.twitter.com/cRdWOVpXIO

— ABC News (@ABC) April 19, 2018