Sen. Tammy Duckworth (D-Ill.) will give birth to her second child in April, the Chicago Sun-Times reported Tuesday. Ten lawmakers from the House of Representatives have given birth while in office — including Duckworth, back in 2014 — but Duckworth will be the first sitting senator to give birth while serving, the Sun-Times notes. The journey to Duckworth's second pregnancy was an arduous one.