(CNN) Sen. Tammy Duckworth, who just gave birth to her second child, is attempting the rare move of changing longstanding Senate rules in order to accommodate senators with newborns.

The Illinois Democrat has submitted a resolution this week that would allow senators to bring a child under one year old to the Senate floor during votes, which they currently cannot do.

"After many positive, constructive conversations with her colleagues on both sides of the aisle, Sen. Duckworth is glad to be able to offer this legislation to ensure no senator with an infant is prevented from performing their constitutional responsibilities -- and send a message that working parents everywhere deserve family-friendly workplace policies," said Kaitlin Fahey, Duckworth's chief of staff, in a statement provided to CNN on Monday. "She is optimistic that this will be resolved quickly."

Duckworth gave birth to a baby girl on April 9 becoming the first US senator to do so while in office. The senator decided to take her maternity leave in Washington rather than in Illinois so as to be on hand and available to cast her vote, if needed.

Leading up to giving birth, the senator openly expressed concerns how the Senate rules might impact her ability to do so while caring for her newborn.

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