First US senator to give birth in office offers heartfelt Mother's Day message: You're what keeps this country strong'

Illinois Sen. Tammy Duckworth, the first sitting US senator to give birth while in office, offered a heartfelt Mother's Day message on Sunday, celebrating moms nationwide for growing the next generation for our nation.Hang in there, sister.We're in this together, and nobody has perfect work-life balance, everybody struggles, and so do the best that you can, the Democrat told CNN's Dana Bash on State of the Union.

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