Michael's hair changes lengths several times.
The Vice-President discusses casting a tie-breaking vote in the Senate. While the VP does have that Constitutional authority, the vote had taken place well before the discussion. Tie votes are not held in abeyance awaiting the VP. If she wasn't on the Senate floor when the vote was taken, she would not be able to cast a vote after the fact. The tie would mean the bill was defeated and legislative action on it was over.