Assistant President?

What was Obama talking about when he told the Democratic Convention delegates in Denver, CO and the whole America last night that Michelle, his wife, is going to be his Assistant President??? He said this live from another city after his wife's speech at the party convention. And talking about her speech, she sounded a different person last night after all the "hate talks" she had in the past. She seemed to triumph in her dream to depict herself as an ideal homemaker rather than a strong advocate of feminism. And what is the drama behind her extreme visibility nowadays? It seems to me that she has big political dreams for herself- launching a career in national politics. It makes sense that her husband called her his future Assistant President. Well, as far as I know, America will not be electing an Assistant President, so they can stop this dilusion.