Schumer asked if he could finish his call. The attendant said "no" because the plane was waiting for him to finish so it could take off.
The state's senior senator ended his call, but then launched into an argument with her, claiming he was entitled to continue his chat until the cabin door was closed.
"She said she doesn't make the rules, she just followed them," the aide said, according to Politco.com.
"B****!" Schumer remarked to Gillibrand after the attendant walked away.
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