What's the job of a Senator?

There was a priceless moment near the end of Greta’s show tonight. There’s nothing to link to yet, but perhaps someone else can add whether they saw it and were similarly floored. I don’t know how Greta didn’t fall off her chair.

She was interviewing some Obama staffer, and the end of the exchange went something like this:
Greta: Did Senator Obama ever introduce legislation to end the war in Iraq?
Obot: Well he supported several–
Greta: I’m asking whether he himself ever introduced such legislation.
Obot: It’s not the job of a Senator to introduce legislation. His job was to bring people together blah blah blah

The rest was a blur because I was so caught off-guard. Greta ended it there and said she’d have to have him back.