York is wrong on this one. When a sitting president agrees to a debate, he agrees to share the stage with an equal. Each deserves the same deference. The president is not allowed special rules not allowed for the other. The challenger is entitled to respond to the president in the same manner the president responds to him.
This is one problem with a president accepting the invitation to a debate. He elevates the challenger to the status of an equal.
This election, Romney elevates Obama by appearing on the same stage with him....