It's obvious Issa did because he didn't want the committee to be stalled by Kerry, which is what he's doing anyway by conveniently (for Kerry) being away on the date he is to testify.
The whole administration has nothing but contempt for America.
During one hearing, I remember one woman cutting short her testimony as ‘she had an appointment’. She was smirking as she left, knowing there wasn’t a damn thing anyone could do to her.