<<The VP is also President of the Senate - the only duty delegated to the VP in the Constitution. >>
No shit, Sherlock.
<<Just because most VPs do not attend Senate sessions regularly does not mean that they cannot, nor does it mean that it is not part of their job.>>
The question, as I recall it, was "What does the VP do?" not "what can the VP do?" and certainly not "what is the VP's job description?"
I give you guys credit, though - - your attempts to rationalize this idiot's stupidity are endlessly inventive, even if they defy all common sense.