Edwards clearly crossed the line when he did that, the way he attacked the issue, his phrasing, using the situation of Cheney's family subtly to belittle him and his relatives while "appearing" tolerant (gag), etc.
Cheney seemed po'd over it, but responded with supreme grace and dignity.
Although he did not thank whatshisface in his closing remarks, and remained seated while shaking his hand....priceless! Just showed who was in charge, and slightly PO'd.