Duckworth was all smiles as she later entered the Capitol, holding baby Maile who was wearing a pink cap.
CBS News' Nancy Cordes noted to Duckworth that baby Maile, who is just a couple weeks old, is quite young to be making history. Senator Duckworth joked, "She is! I hope we aren't setting expectations too high for her!" Duckworth was then greeted by her Senate colleagues on the floor, including Sens. Chuck Schumer, Patty Murray, Jeff Flake, Amy Klobuchar and Majority Leader Mitch McConnell.
Although no one objected, the idea didn't sit easily with some senators in both parties concerned that babies would disrupt "Senate decorum."
Sen. Klobuchar says she spent nearly two months privately reassuring Republicans and Democrats that the new rule would not mean diaper-changing or nursing in the Senate chamber.
On Thursday, Sen. Orrin Hatch told reporters on Capitol Hill, "If a Senator wants to bring a baby on the floor I don't have any problem with that."
He added, "I don't think people are going to bring babies to the Senate floor but it's a fun thought is all I can say."
