Tammy Duckworth becomes first senator to give birth while in office

Sen. Tammy Duckworth (D-Ill.) gave birth to her second child on Monday, a daughter named Maile Pearl Bowlsby, her office announced on Twitter.

Why it matters: Duckworth is the first senator to give birth to a child while in office, and one of only 10 women to give birth while holding elected federal office. The other women had their children while serving in the House.