As I stated on another thread today:
Considering that one of these men might, on a moment's notice, be required to sit with the leader of another nation contesting for liberty, every citizen who watched Biden should be seriously concerned.
Actually, in my opinion, there was little difference between Biden's performance and that of Obama, in that both were disrespectful and derisive. One's expression showed a sullen, resentful, petulant attitude. The other displayed an equally appalling disconnect between the seriousness of the discussion and emotional stability and expression.
Both were arrogant and may have underestimated the innate intelligence of millions of citizen/voters of the United States of America and their ability to recognize the difference between bravado and substance of character, respect for others, and seriousness of the challenges to America's liberty.
You can not expect anything different from the left