Duckworth, who is the first woman to give birth while serving in the Senate, is taking her maternity leave in Washington D.C., instead of IL, so that she can be available to cast votes in the Senate if needed.
"Thank you very much", Duckworth said to the Kentucky Republican.
Sen. Dick Durbin (D-Ill.) after the rule change was approved [said] that it "will do us good. every once in a while to see a pacifier next to the antique ink wells on our desk or a diaper bag".
The US has had almost 2,000 senators in the past 229 years, but Duckworth is the first to give birth as a sitting senator. She continued, "The Senate is steeped in tradition and just like the rest of the country, sometimes things have to change".
A baby may even add some levity to the politically-charged chamber. She told POLITICO before Maile Pearl Bowlsbey was born that she planned to take an unofficial maternity leave but would return to the Senate when her vote was needed. "I'm glad we were able to get this done to address the needs of parents in the Senate", BBC quoted him as saying. Under the new rule, men, too, can bring new babies to the floor, she emphasized.
The Senate could vote next week on Secretary of State-designate Mike Pompeo.
Ex-USA First Lady Barbara Bush dies at 92
Our country is better because of Mrs. "One out of six Americans literally can not read above the fifth grade level", Barbara said. She shares the title with Abigail Adams, whose husband, John, was the second president, and son John Quincy Adams was the sixth.
The rule had passed without objection - but there had been plenty of grumbling about babies threatening the Senate's cherished decorum.
Still, her presence was felt. considering up until Wednesday, children of any age were not allowed to be on the Senate floor during votes.
Enzi said that allowing a parent to bring their infant along so that they can follow through with Senate duties is an entirely different, more important issue.
Asked how she was doing and whether she has been getting much sleep, Duckworth jokingly shot back: "I've got a 10-day old, I'm not getting no sleep!"
With 23 women now serving in the Senate, the issue quickly was resolved. "We are proud to have Senator Tammy Duckworth - working mom to a newborn - among our ranks and I'm glad the Rules Committee was able to swiftly make this historic rule change for her and future senators".
Of course, some would argue that babies have always been allowed on the floor of the Senate, but those would be babies of the adult variety.